Geez.. give it up Ron, you are just going to get everyone to hate you.
NOT INTERESTED IN RON DESANTIS! MAGA!
Ron is just playing this cagey. Rather than to announce, and therefore having to put himself out there to go head to head, answering Trump at every challenge, he coolly accepts all the arrows propelled his way (most of which are based in faulty logic and not really damaging anyway). This way, he looks much less damaged, and if in the course of things, Trump manages to overreach and self-sabotage his current campaign, then Ron is there as Plan B.
There is an advantage to having a deep bench, and Republicans have the further asset in that there are several tested and able persons ready and willing to seize the banner should for any reason Trump, now so clearly the front-runner, falters and is injured in a way that does not allow of quick recovery, there are several former Cabinet members, Mike Pompeo among them, that can pick up and run with the MAGA flag and do so convincingly.
Vivek Ramaswamy and Nikki Haley, both VERY long shots at this juncture, will probably end up getting the most fire so long as Ron remains undeclared, but note also that neither of them directly attacks Trump on much of anything. Trump is a notorious counterpuncher, and his most effective tactic is to utterly demolish the frontal assaults directed at him.