Hollowtech II external bearings require their own specific installation/removal tool. Park and Shimano both make them and neither are very expensive. Octalink bottom brackets (aka HollowTech, no II) use the same splined installation/removal tool as Shimano's older square taper UNXX series of cartridges.

Self-extracting bolts have been around for decades but only remove the crank arms from the bottom bracket spindle and work on square taper, Octalink and ISIS cranks. You still need a specific tool or tools to remove the bottom bracket itself.