[arugulum]

BERT was on arXiv before being peer reviewed. As were T5, BART, LLaMA, OPT and GPT-NeoX-20B. The Pile and FLAN were also on arXiv before being peer reviewed. Of course, the original Transformer paper was also on arXiv before being peer reviewed.

Being on arXiv before being peer reviewed is not the or even a problem.