A few massive logic problems in the film

Back in the day when this came out I remember it being marketed as "the thinking man's action movie" but I find that claim laughable because most of the film falls apart pretty quickly if you stop and think about it.

For one, he's a police officer so you would think he'd be in the habit of writing reports for his assignments, but each time he returns from one everyone seems surprised that he's giving them new information. Wouldn't that be pretty common if their job entailed constantly changing the timeline? Why respond to any of his claims with incredulity?

2) They are always leaving futuristic guns all over the place, like in the chip factory. Also all the dead bodies of all the henchmen. Wouldn't these futuristic guns somehow affect weapons technology and give people in the past some sort of feeling that something is up? Also the dead bodies, like that guy who got frozen and kicked off the ledge... what if they fingerprinted his corpse or tested its DNA? If they found a match for it and it was some 10-years-younger guy in some other city, wouldn't that present a possible problem?

3) McComb straight up KILLS Parker, that computer scientist who was making chips for him in the past and got rich after buying him out. But then later when Van Damme comes back to the fixed-up future, his company is still called "Parker Datasystems" or something, making it a point to show that McComb's name is no longer on it. Well, this raises a bunch of problems, like why Parker's name is still on the company after his death (not a Huge issue if he maybe had a brother helping him or the company went on in his honor), but if McComb was at once attached to the company that makes the chips that are used in the time machines, wouldn't that have represented a huge conflict of interest on running the oversight committee on the time machines? They also lucked out that none of the destroyed machinery hurt the future of the chip company.

There's a lot more if you really dig into it, like why Van Damme is surprised to see his kid when he comes back to the future, meaning he only remember his own sad depressing timeline and has replaced the version of himself who had the happy one.