Oh, where to start? ......
There have been valid points made all around, here, with regard to pros and cons of putting .38's in a .357 .... recoil management and tolerance, ease of extraction, excessive (or insufficient) "SturmundDrang", wasted performance potential vs. wasted performance (overpenetration) .... etc, etc. .......
In my own experience, I really only shoot .357 and .38 for informal plinking or to dispatch wounded deer (it happens when you take kids hunting, and shooting a deer in the head at close range with a centerfire rifle is a BAD idea), and for the latter, either one, or a 9mm or even a 22lr pistol works, but may not be legal (YMMV) where you are. IME, I think .357 out of a handgun, no matter how hot it's loaded, is marginal at best for hunting deer .... you may think differently, and that's OK, too.
I used to shoot a bit of .357 at bowling pin matches, and some IDPA ...... in both those cases, most of the more experienced guys were shooting hot loaded 158gr .38's out of ..357 revolvers (large framed, sometimes 7 or even 8 shot ported guns at the pin matches, and steel framed .357 snubs at IDPA) ..... their follow up shots were faster, and reloads were MUCH faster than mine ...... the only time I ever beat any of them was when they missed (or worse, knocked a pin over and it stayed on the table) and I did not. If one were to carry a wheelgun, and anticipated needing to do a reload, I think that this might not be a bad idea ...... I don't carry one, so that's a moot question for me.
With regard to recoil tolerance (and I think maybe that's where the OP got his "youtube weenies" in the title) ..... everybody has different levels of tolerance for recoil, based on a lot of factors ....... age, infirmity, physical condition/muscle tone, expectations, mindset ..... add in the load used and the particular gun it's fired out of ..... that's a lot of variables. I've noted this in threads on recoil tolerance in rifles before....... The OP is ostensibly a youngish man in great physical shape ...... IDK what youtube videos he's referring to, but my overall impression of the average youtube gun guy is someone very young that's never worked outside a cubicle (if at all!), and has softer hands than than Madge from the Palmolive commercials...... they don't have the hand strength that somebody that works with their hands every day for decades has developed ..... they probably only fired a polymer framed Windernine fed 115gr range ammo for reference, as well ..... they expect a "Magnum" to kick them, and so it does ..... my perception of the "average person of their generation" is that their mindset is ..... well, .... weak...... and like many generations before them, they think they know it all, and the things they figure out are brand new discoveries nobody has come up with before (possibly because it's not been put out in a short video format that they can find on their phone) .... and that does "irk" me a bit, too..... so I can kinda see where Mr. Panzer is coming from there ..... but I'm given to understand that I'm becoming a crabby old curmudgeon that thinks there's no functional difference between those who cannot read and those who do not read, so what do I know?