I think some of the complaints are that he visited on the way to his vacation home in Mar-a-lago, and spent about 6 minutes with the actual victims, so that after being able to say to the press "yes I have met some of the victims" he got back in the motorcade and was off.
I believe the timing i saw was motorcade arrived at 18:55, Trump entered. 19:15 The motorcade was pulling away and heading off.
In between, he walked from the entrance up to the victims, praised the first responders, smiled, gave a thumbs up, had a small press conference, took pictures, gave more thumbs up, then moved onto the sherriffs.