As I see it, the question is very broad and has a 2nd meaning behind it. If someone wants to get into Minecraft or anything video game-related, I imagine it will be tough going due to certain niches being so saturated.
Even if YT had stagnated growth, it would not deter me to go forward simply because the niche YT owns which is long-form content and the premium Google search position it has.
Until I see another platform that really embrace and becomes known for searchable long-form content, YT (strategically speaking) is for me.
If someone wants to do short-form content only, Instagram and Tiktok are the top two that I would spend time on.
Having said all that, it is still good to hear that YT is still on a growth path.