What do you guys think about the legality of this pack? https://www.curseforge.com/minecraft/texture-packs/programmer-art-fix

Everything seems to check out with me. Just to be safe though, make sure it doesn't modify the crosshair or have low fire.

I would just recommend using the programmer art provided in game to be safe. ...or join the discord and ask one of the mods to check it for you there

How can I check that?

Not really sure what you're addressing...

1. Go to resource packs, and on the left side (available) there should be a pack called "Programmer Art", click that so it moves to the right column (selected).
2. On the left side of this forum post somewhere you should see a list of game moderators. Above that are rows, click on the one labelled "Discord" and accept the invite and ask in the chat (pls make sure you use the correct chat to ask your question)

@KingLavaCactus The problem with regular programmer art is it just uses 1.13 textures, and since so much has changed since then, it just looks off. For example, you have the classic netherrack next to the other newer types of netherrack (such as having gold in it) and it doesn't sync and looks really bad. I actually like the resource pack @Spylee01 sent as I tried it out myself and its fine. It doesn't break any rules. In fact, it fixes model bugs caused by regular Programmer Art.