For
It discourages learning and confidence.
Against
Correct pronunciation is part of respecting a language.
Anonymous excerpts, translated where noted.
“When you mock someone for a small grammar mistake or a weird pronunciation, you aren't showing how smart you are.”
“We should be encouraging people for trying, not making them feel small for not being perfect yet.”
“Hi, you could try doing comprehensible input and shadowing; I recommend looking it up on YouTube.”
“Correction is part of improvement.”