It's powerfulness IS the problem. Some parts of systemd are great. Some are meh! Some really suck. But because it's monolithic, you can't take the good bits and replace the bad. You have to take it all or nothing.
That's the problem. Its architecture is offensively bad.
The latest Ubuntu defaults to using Wayland. On my Framework, it would freeze the whole box every few days. I switched to Xorg, and it was much better. (It's an option on the login screen - just clock the little cog and choose Xorg before you log in.)