Yes, it is. No, the delays on Youtube don’t come from the performance of the adblocking code, so you won’t notice many differences. But more efficient adblocking is good for everyone - noticeably more so on devices with batteries, but still helpful for everyone.

Last time I went, the doctor just told me “sick prostate bro” and then booped it

Because it would look much more weird to walk around naked, except for your butt?!