The short version is that Meta see any type of competitors has a treat to its capital. It will do whatever is needed to fight it and destroy it. They introduced stories for Snapchat, reels for TikTok, etc. With the fediverse, they federate to extinguish it.
At least, you can change your DNS to one who blocks ads. It’s not as efficient as uBlock origin and system wide on Android. But, it’s better than nothing.