Hi, Is there any real reason to retain it? I realize it's not been a huge issue to maintain the format, but it has significantly fewer features than the other formats, without corresponding upsides (sql is clearer to read, directory format has parallelism, custom is a single file while allowing to select sub-sets of the data). There's also the fact that it creates temp files, which other formats don't.
Given the apparent lack of upside, it doesn't seem good to offer a sub-par choice to our users. If we were to remove it, it'd obviously be a drawn out affair, given that we likely couldn't drop it from the restore side immediately... Greetings, Andres Freund