1-shot bosses are major turn-offs

I am a max resist lvl 72 char - and cant progress because of 1-shot Black Sun boss. But the issue is general - all 1-shot bosses are simply dead lazy boss design. I think we’re a bunch that play this game NOT 8-12 hours a day - and play to relax … with a pinch of challenge. But now the 3’rd boss I have seen that have this 1-shot mechanic and it’s a huge turn-off. I don’t have the time or the desire in my maybe 1-2 hour a day schedule to learn all these mechanics to avoid getting 1-shot’ed.
Be very careful devs - the wave you’re riding could easily be confined to 8-12 hour a day players very soon if you do not tone this 1-shot mechanic down a lot. That’s your choice of course - as is my/our choice to keep playing and control what we say about the game to friends
BTW - I think we are a growing bunch of “middleaged/old/elderly” players (well we are as per default :)) … please remember devs we are NOT all 16-25 year-olds with tons of game time.