As the article pointed out, didn't he leave ND for LSU so that he could have access to better resources and fewer restrictions? He has both of those at his complete disposal.
Now that he has been at LSU for a couple of years, and has had very good recruiting classes, he doesn't have any excuses remaining to at least get them to playoffs contention.
Even with the loss of players via the transfer portal, there's an abundance of talent on that team (Ed Orgeron wasn't a slouch when it came to recruiting).
Link: https://fansided.com/posts/brian-kelly-wild-excuses-lsu-rampant-transfer-portal-misses-01hxcfanpa52