Few thoughts:
1- Yes, Dr. Authement helped the university grow in academic research to where from that standpoint, we've definitely left LA Tech behind. However, it's not like that school is just some sort of bum in the state in academics. Their engineering program is very good and respected in its professional sector. You want to major in engineering at a Louisiana university? UL, LSU or LA Tech are the schools to do it. Don't waste your money paying for Tulane or Loyola.
2- Yes, Authement and Reneau went in comparatively opposite directions. However, your approach and the question you're asking is flawed, in my opinion, because it didn't have to be such a hardline either/or. Authement didn't want to "fully fund" athletics with university dollars and rather focus those on academics? Fine. But why refuse to allow an RCAF (or the 80s/90s version of it) be set up? Why intentionally hamstring coaches and staff from being able to aggressively fundraise for their programs by dictating who they can and can't talk to?
THAT's the problem and issue I had with Ray Authement. He didn't merely starve athletics from a university funding standpoint. He also straglened some of the donor potential as well, and THAT is what set our football program, and athletic department as a whole, back a couple decades.