The answer is the same as to almost any other question in the world: "it depends".
If either partner is totally hooked on the specific feeling of anal sex, any kind of frot activity is likely to disappoint. You are simply rubbing against each other in hopes of a "friction orgasm" - there is no sensation of penetration or immersion grip, as with anal or oral. Whether you can get off from this satisfactorily depends on several factors.
Very young gays or closeted married guys can easily get off from frot activity because they are so mentally turned on just by being with another man that ANY contact will trigger an orgasm. More experienced gay partners might find frot exciting if done at times or locations where full-on sex may not be practical (outdoors, in public places, in a car, while visiting friends or relatives, etc): in such cases, the thrill of getting off "inappropriately" can make frot seem hotter than it might at home. As the saying goes: sexuality is centered in the mind, not the genitals- if you're mentally turned on by a situation, you can get off from any activity.
My personal experience with frot has been mostly good. As I noted in a similar thread, I very much get off on "fake fucking": pumping between my partners butt cheeks (and vice versa). The intercrural form of frot you asked about is a different story: I don't care for that at all. My partner likes topping me that way, but I find it very uncomfortable: I need to press my thighs together very firmly to give him any sensation, he thrusts for a very long time, and the vigorous rubbing quickly becomes unpleasant for me because he has a thick cock and I am rather hairy. My thigh muscles often end up irritated, which kind of ruins the rest of my day. I have no interest in topping between anyone's thighs myself, either: that specific friction annoys me. But I'll happily thrust against anywhere else (chest, stomach, butt, leg, foot)
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Naturally smooth twinks or studs with no body hair would probably enjoy intercrural bottoming much more than I do, and a top who is less demanding of thigh pressure would likely be more fun to accommodate. The face to face aspect of intercrural is quite nice, and the only reason I put up with my partner's occasional requests for it. Watching his expression as he nears orgasm almost makes my discomfort worthwhile.