To the OP: my ex-T reacted to my big news in an almost negative way. I was really hurt by it and then more angered and annoyed. I was like what the heck, T!? I finally did something major and you act like I tied my shoe. Lol. But I didn't confront my T, I just acted slightly annoyed.

Looking back, in my situation, I think my T was not impressed because I was avoiding deeper work by focusing on this goal that I had achieved. I was avoiding the problem, albeit unconsciously, but still.....my T could see I was missing the real issue and it was hard for him to congratulate me when what I was doing was further complicating my life. But that was just me. Ymmv.