The biggest plot hole is imaginary magic stones not working the way you unilaterally decided they should work?
How would you erase something's past? That doesn't even make sense, the past already happened, it is set. Not to mention that if half the universe never existed then it creates a huge logical inconsistency because many of those people were necessary to set into motion the events that led to Thanos wiping out everything in the first place...remove them from the past and Thanos's mission doesn't happen, which means they don't get wiped out...you fall into a logic loop.
The movie did a great job of avoiding those logic loops by making clear that you can't change the timeline of your own past and using the many-universes theory. Most physicists today agree that if time travel really is possible at all, it pretty much can only be possible that way, everything else creates impossible logical inconsistencies.
Tony's just a regular human, what do you expect? Pretty much any use of the 6 stones should kill him. It's enough of a stretch that he lived for a couple minutes to say goodbye and didn't just get pulverized right then and there.
2. There's no way to do what you're suggesting with the infinity stones and not create all sorts of logical inconsistencies. You can't erase something's past because that time already happened. If you erase the past of the infinity stones then you have to cancel out everything that happened due to them, including their destruction, which means now they exist....it just doesn't work.
3. Thanos didn't make the gauntlet, a dwarf did. And the stones are elemental powers, it makes sense to me that there is nothing that can truly protect you from them. No glove will ever be on their level cause nothing is on their level.
4. Captain Marvel gets a way outsized amount of hate because she's a strong woman who has had conflicts with men, and there are 1000 threads on here I can link if you want to see the kind of people who hate on that. That being said I'm not particularly interested by her. They could have done her better.
5. Life sucks.
She was raised without family and she died without family.
6. There's no way to show that that would be funnier than what I'm imagining. I also want to see him trying to return the mind stone while avoiding two different versions of himself - there gonna be three Captain Americas walking around in that building with Hydra and everyone else.
He had a lot of time and an incredible amount of knowledge. He might have avoided Wakanda until the OG Capt had befriended Black Panther, then once that Capt was on the run in hiding he could have waltzed in pretending to be the OG and had Shuri make him up a shield.
But no, destroying half the life on Earth isn't a "plot hole" just because it's difficult for you to imagine.
That would be bullshyt.
Stormbreaker AND Mjolnir can’t hurt his sword but SW broke that shyt in 3 seconds. I guess you already had Tony get his ass beat and Cap needed to have his GOAT moment before riding into the sunset but damn. Let Hulk get washed again or something 
rather than the 
to Red Skull.
