Yeah especially moves like Flash, Defog, and Whirl Pool since you only would probably use them once or twice. The only good moves that Hm's have are Surf and Fly for instant teleportation.
Don't forget Strength. Beyond its situational use for the puzzles on the field, it's still a good move to use in battle, as well. Especially if you have a physical-stat favoring Pokemon.
Any way, the flip side of the TM news (now that I've come down to Earth about it) probably means that we'll probably have to work even harder for some of them, since you only have to get one to have your entire potential posse covered. That could possibly make things even more interesting than they've been already. But in any case, again...it's good to see even more proof of Pokemon finally becoming a "16-bit era" RPG.
And I definitely agree with Jeri's comments on GAF that this is shaping up to be the "G/S/C" of this day and age. It only needs a second region to explore, and it would do just that...