I like this change. I think the real problem is that we do not get any real alternative.
Less scamming
Most of the ads are scams or ads for low effort predatory games, that are designed to earn bucks quickly for the so called “devs”. Besides, once you click, or even worse, play such game, you are bombarded with even more ads and game pass purchase pop up each minute.
I am really happy that those obviously scammy ads are gone for minors, even if it hurts legit devs a bit. This change will hopefully act against that first click that takes kids into predatory game rabbit hole.
It’s not the end of the world
Website ads were not showing on mobile, what majority of younger audience was on. So this will not have as big of an impact as some people claim here.
Besides advertising can be anything, flashy game icon, game thumbnails and promo videos, game description. You can advertise game passes and products on the game website and within the game. You can also advertise in other games and outside of the platform.
If your game is good, you only need to advertise during the launch period. If your game depends on constant ad support, maybe its time to go back to the drawing board or start a new project? I stopped buying ads ages ago.
Alternative?
I would really like if Roblox main page algorithm threw some underdog games now and then. Playing it safe with already established titles hurts not only new devs but is also against competition, that is the driving force behind happy customers. No competition - no improvements to the old, rusty titles.
I think redesigned sponsored section, with some kind of approval system would be nice. I am, for one, ready to pay more for such thing.