I agree. It can be a bit fun when trying to engage with what is written and what we know about things in the MCU so far, like trying to make sense of it without jumping through too many hoops, and that could then be fun to speculate about how the rules work beyond what we have been told and what will be the outcomes in the show and in the MCU, but a lot of people don't care to engage with it on that level and believes it must be air tight to the any criticism you can lob at it and the point of discussing any of it is to test it and pick it all apart.MCU time travel discourse is exhausting and people are over thinking every minuscule detail.
It's really pedantic and cynical. It's like being anti-fun.
There is some degree of thought and logic put into what they are doing and they are doing their best working across multiple projects with multiple creatives, so I choose to go along for the ride and engage with it for what it is, and not what it isn't. Maybe sometimes they aren't clear on what they assumptions are for their logic, and I think that's fair to criticize or talk about, but even that is something I feel we just have to give Marvel the benefit of the doubt at a certain point that they have a purpose and wait to see what that is before trying to pull on the loose threads to see if we can make it unravel.