Gotta admit the standard numbers are dead easier: " I'll have 10 6204's ...... sounds so easy after seeing those motopart numbers.
Hardness to get out? From memory pretty easy, easier than my KTM thats for sure ( the original in the KTM had frozen in there real good )
You just need to get a long rod, thinner than the axle rod, then work on each side of the bearing. WD40 is handy, as is a clean of any "crud" that could jam under the bearing outer Dia. as it tries to slide out ( sharp knife or say a sharp jewellers screwdriver would work for this )
But mainly tap at opposites/diagonals ( like you do up a car wheel ).
Once one side is out the spacer tube can be removed and access to the other side is easier, SO allways test the one thats moving out easiest and remove that first.
Its best not to put pressure on the inner race but sometimes on removal it has to be done. Never bash/apply large force to, the inner race of a new bearing. If you have cleaned it well it should be a fairly easy press fit anyway. Sockets make great refitting jigs if you have one just under the bearing OD. that way all the fitting force goes on the outer race where the friction fit is.
Just clean it all well and its easy. Seemed well machined to me in that respect.
A proper impact bearing remover would sure make it easier but meh, the drift works fine

Just make sure it isn't too rounded off at the end for catching the bearing edges.
But remember tap it out in a
opposites or
diagonal pattern