My sister just bought her first house, electrician said "it's fine". But I've seen enough posts on here to push her to get a second opinion.

So I looked through my sister's inspection report when she was buying and happened to see a picture of her panel. I urged her that although it's not a deal breaker for the house, she should absolutely get an electrician to replace the panel. Well, she had an electrician come over to provide a quote and he basically told her it doesn't need to be changed. I'm PRETTY sure I've seen enough of these on this subreddit to know this is a fire waiting to happen.. it is a subpanel i believe if that maybe changes things? I'll probably show her this post for her information/confidence in getting another opinion.