I am all for proposing and getting married. I however find it to be less about her and zero planning went into that. Simply walked up on stage, got on one knee and done. No real planning or making it about her went into that.
To me it needs to be much better than that. That doesn't show you care THAT much.I feel doing so in a setting where you are showing your girlfriend that it's all about her on that day/night when you purpose, is important. I mean you are asking to be with them for the rest of your life. Make it special and memorable.
No hate towards them or him in anyway though. Congrats to them and I hope for nothing but the best for you two.