There are (small) differences in wheel and tire design to support the sealant based system, and that makes all the difference I guess. Slime tubes are pretty re

There are (small) differences in wheel and tire design to support the sealant based system, and that makes all the difference I guess. Slime tubes are pretty reviled, tubeless is the hot thing. Besides being more reliable it also allows for lower pressures, which is probably the main reason it has become popular. There is very little downside for riders (tubeless is just a bit slower than high end tubes that very few riders use), but for the home mechanic they’re a bit of a pain to work on.