So Second Coil has been destroyed

[subteraneanbird]

snip

The towers do damage proportional to your HP. There was no "You'd be dead if you weren't a tank". You would survive as ANY role because the second stack was something like 90% of your max HP. If it's lower now this means people can double push much more safely, meaning the number of people who actually have to touch a tower or understand them has been reduced, meaning more people can stay on the boss the whole time.

It is by far the least needed change in T8. it is not an ease of play nerf, which you could make arguments for the other changes in T8. It is straight up a removal of competence needed.