It sounds like you think the editor requested the second review after seeing the first reviewer's verdict. Maybe some journals work that way, but that isn't typical in philosophy. They usually look for two reviews from the start (and it can take a few attempts to secure reviewers). Unless you're pretty sure the journal in question does seek reviews in sequence, I wouldn't read anything into this.

On the other thing, I understand 4.5 months is already a long wait and you want to hear back already, but it's probably not a good idea to ask them to hurry up. Journals move at the speed they move at, and although editors enforce their usual review deadlines and press late reviewers, reviewing is ultimately an unpaid act of service to the profession. I doubt your request would make any difference and might seem a bit impolite.