I get it, you don't like the movie but come on - there's no way ANY movie was the blueprint for taking Synder's 4 hour behemoth and frantically trying to whittle it down/transform it into something that could be digested in half the time. That was a colossal mistake, but one without precedent.
Does it have several cringeworthy moments? Most definitely. But I find it easy to look past those because in terms of character introductions (SW, Vision, Barton's family), fan service (Hulk vs. Hulkbuster) and laying the groundwork for much of what was to come it was both successful & essential.