Events are fun for flavors, working both ways. That's something I love in CK2.
But if I remember well, events can be disabled ? (not now because G. wants feedbacks, but in the long run) ?
Exactly. Events are there to add some more RNG to the game, make each play-through feel different and forces you to adapt your play-style.
If you don't want more RNG in the game you can disable the events, and the ancient ruins.
Honestly I think the current bad events might be too soft on the player, you're in general gaining way more from good events than you lose from bad events.