[Mr.E]

Actually it's more like a 1-in-3 CH rate but the big thing about Reflect against Tauros is "if you already got it up." Between crits and PAR, Reflecting in front of Tauros is a lost cause so it must be set up in advance... but unless it's an unavoidable endgame scenario, Tauros is almost never coming in on Alakazam anyway. It technically wins a duel, if you want to switch in on Recover, but nobody willingly trades their Tauros 1-for-1.

And well, Reflect just isn't useful against anything else except Snorlax. Even if you want to argue that Snorlax is individually more dangerous than the trio of Starmie / Eggy / Zam, which I don't even think is true, it's not more dangerous than all three of them combined nor is it as common as any of them. When does Zam even use Reflect? It'd rather switch out against Chansey than use Reflect to dig in and use up half its Psychic PP before forcing Chansey out for a fresh Starmie. If you're doing that, skip the Reflect and just trade with Snorlax directly because you're not doing shit lategame without extra Psychic PP anyway. Toss conserves your Psychic PP against other psychics, gives you low-percentage kills combined with paralysis (which is better than your ~0% odds with Psychic alone), and bypasses playing special drop wars. Everything else gets wasted by Psychic and Snorlax doesn't even want to switch into one of those.

It does stop Eggy from blowing you up, not so much Golem since EQ + Explosion still kills through Reflect, but that's about the extent of Reflect's versatility. I don't even think that's very important since you need way too many Psychic PP to kill it, besides which Eggy will probably switch regardless. It can't duel Zam and generally wants to blow up almost anything else.