Wouldn’t worry too much about swearing on your content… although a disclaimer at the start wouldn’t be a bad idea so Youtube’s arsehole doesn’t start puckering. 
Check out this guy… swears his arse off. 
He hilarious 
, not that I’m that into building guitars… But “I’d print it out but me printers fucked downstairs”
Yeah… funniest guitar channel on Youtube for sure
Always gets comments like “I’m not even into guitars, I just subscribe for the comedy.”
He said once about a synthetic fretboard “I don’t f*cking know what it’s really made of… probably donkey pubes.”
I haven’t watched a guitar building video in a few years, but he is proper entertaining. I love his style.
As for the language warning… it is a good idea. My idea is I have been setting it to “not suitable for kids”… and blasters where we live are only allowed to be sold to people over 18… so I had not bothered. But the rest of the world outside Queensland Australia is pretty big. So I might do it.
The initial review is going to be “clean” language as it will be shared to iHobby.
The teardown/upgrade/build video that will be exclusive to my channel will be more… natural 
I have done the initial filming of the review, but I had almost no gels to shoot and chrono it!
But got plenty of footage to make a start at least!
You could always mute the original videos audio and record a voice over, maybe some short notes or script to follow for the video to avoid any non PG 13 language slipping out.
Just a thought
I was originally looking at doing that with some of the videos I was doing with my work setups for in house training purposes, breaking it down step by step and demonstrating safety device positioning, building tapers, explaining the different taper lengths and distances required depending on the speed of the road, breaking it all down and presented as “professionally” as possible.
My company tasked me to do training video’s for them under the guise of being paid for my efforts but they never followed through after I have them one video they requested, so I stopped and just stuck to the videos I was already doing and never submitted the videos I had already completed so fuck em, no pay no training videos 
From my understanding, the swearing thing is mainly for people looking to be Monetized for their videos?
A few that I’ve heard mention are Isaac Butterfield, Bush Barbie and our WA local Ozzyman comment that they can’t swear within the first 10 seconds of their videos or they cop a strike or Demonetization…or something like that. 
It REALLY pisses me off to see videos with the swearing or whatever words the “woke” crowd deem as “offensive” being bleeped out.
How the hell are you meant to be able to follow/understand a story when every second or third phrase is bleeped out? 
Good luck trying to do a video without any Swearing @RokSolid … I know that it’s only a natural part of our Aussie language and is bloody difficult to do because we don’t even realise that we are swearing, whereas others do it internationally and on purpose!
Like one Utoober I frequent said, I don’t give a fuck I get support through merchandise and patreon from the viewers they can do what the fuck they like Was very funny I thought. Very popular channel.
If it wasn’t for the creators in the first place, utoob would not exist.
I get for kids but they have that PG age restriction going on, so should be enough or, just bloody watch something else!! It’s not forced upon you so why restrict it. I bump in to some that are utter boring like paint dry, skip on to something else that blows up or rolls over.
Tutorials on many things are very handy for fix it yourself. When someone says this fucking thing goes in here, I understand
As far as I am concerned it is more just me hanging out with a blaster having fun and talking about it, in no way am I not looking to be monetized, or even imagining that it would happen. Youtube already doesn’t monetize “guns”, so… bots wouldn’t like it!
I found that when I try not to swear it sounds like I am in a meeting at work it doesn’t flow well… if I am beeping it out or covering swearing with sound effects it is more for impact or comedic value than trying to be G rated!
And yes @DocBob a lot of the swearing I don’t realise I am doing it until editing time! Us Aussies do swear but it is very casual somehow! I try not to and to keep it on point for the informative videos, but for the general tinkering and such I let it run 
I used to have the same thing mate, came off as having a bad Stutter or being Dyslexic or something!