Is WTB Tubeless Compatible System rim incompatible with clinchers?

All tubeless compatible (aka "tubeless ready" or just "tubeless") rims and tires can be used with tubes. It would be impractical even for bike industry standards to disallow people from putting in a tube when something goes wrong, or even buy a modern wheel/rim if they weren't interested in tubeless.

The main special thing about the TCS rims compared to many others is, as their ad copy points out, they have a certified UST standard bead seat. The idea there, not to give an opinion either way, is that in conjunction with a UST tire the bead interface meets a designed standard and can have greater security than the alternative of just using parts that are more arbitrarily designated as "tubeless compatible," in other words every non-UST MTB tire and rim on the market. You can still use whatever tires on TCS rims, tubeless or not.

I'm responding to the statement that you can use whatever you want on TCS rims. I'm a road cyclist who does the occasional one-week tour and have recently converted to a gravel bike, which I love, but only to find that it has tubeless compatible rims. Everyone seems to think there's no downside to this, but it's made things very hard for this small-handed female rider. That shelf in the rim makes it impossible to change a tubed flat roadside by myself, which I can easily do on my cheapie grocery-getter with conventional rims. I simply don't have the finger strength to break the seal on these tubeless compatibles, nor does my husband. It takes us both and at least three tire levers, and still takes a half hour. And once the tube is in, it's very difficult to seat the tire without an edge of tube sticking out (even pumping it a bit to get it out of the way) to cause another flat. So if while touring I have to end up at a bike shop anyway, I might as well go tubeless I suppose, but I wish I weren't pushed into that. I haven't seen anyone else complaining about this. No one else is having this problem?