It’s just easier. I have both but I almost never use Mastodon anymore. Federation there doesn’t seem to work right. I didn’t know what an instance was so I joined mastodon.social. Finding and following people in the app doesn’t always seem to work right if they’re on another instance. Doing it in a browser is even more painful.
The people I liked to follow and interact with on X, many tried Mastodon and abandoned it, and many more are now on Bluesky. This creates momentum to “follow the crowd” as it were.
Additionally, you only have one chance to make a first impression. A lot of us tried Mastodon earlier and it wasn’t ready. Bluesky started as invite-only, which drummed up interest before catching this zeitgeist of people leaving X.
Lastly, and maybe it’s just me, but the font sizing on the official Mastodon app on Android is generally too small and can’t be changed. Bluesky allows me to change it and make it more comfortable to use.
I haven’t had a DLL issue in Windows in like 20 years.