People just having a "sky is falling" attitude to having to spend 5-10 more seconds on a boss and make a bigger deal out of the issue than needs making.
Nobody here is denying it's an issue. Just that it's still insanely easy to solo old content without issues.
And Siege has Galakras which doesn't start with outright nuking. That's it. You can't enter Norushen trials solo last I recall because it resets. Plus Galakras got nerfed to only require 1 cannon/tower.