Yeah, for sure. I'm not saying FRR was always the right answer for all questions, but for a good decade or more it was a pretty solid choice, and particularly with auto-tunnel, it was easy to do. RSVP was far too complex a hammer for just FRR, and I like SR-LDP for FRR now, but from maybe 1998 (?) to 2015 (?) MPLS-TE FRR was the best tool we had.