We can't really know what meta we will go into. Even if condi meta becomes a thing, thief is relatively okay at condi cleanses. It's actually way better than non-inspiration mesmers (cleanse mantra is nerfed in this patch) and non-mallyx revenants. After Shake It Off nerfs warriors will have a harder time dealing with condis as well, healing signet nerf doesn't help either. In a way, even currently meta holosmith build is worse at dealing with conditions because they don't have much evades except vigor, which is nerfed. Also, we should not forget that thief counters necromancer and mesmer, which are the primary condi classes (even though condi mirage is hit greatly and chrono is nearly unplayable, they have yet to kill core). ps: if condi becomes a thing, thieves can go daredevil and take "that" trait. because thief always changes depending on meta.