I understand seniority is different from company to company, however I didn't actually get negative feedback during the interview, which is probably the reason

I understand seniority is different from company to company, however I didn't actually get negative feedback during the interview, which is probably the reason why I think it was unfair. It will expand my skillset a lot, this is the main reason I actually went to the interview, however there aren't many other upsides, the pay difference will likely be negligible when (if) I become TL and be able to look for a TL job for higher pay.