In some categories, lucky blocks give a massive advantage. For example, the different wool colours category can be very easily done by getting "Rainbow Wool" from a lucky block and just mining it. In addition, lucky blocks is a timed gamemode and only stays for a week every month, not allowing anyone to get a faster time in those specific categories where the lucky blocks provide a massive advantage. Also, due to lucky blocks being a dream mode, it gets updated fairly frequently potentially making some of the categories much harder.

I think that adding a separate category in some of them for only lucky blocks could help make some of these runs more fair or removing the use of different gamemodes entirely could help incase there are lots of game-changing updates.