How good are the punches in Muay Thai?

The reason I am asking this is because I saw a lot of discussion where people are saying that thate punches are taught last and that they don’t have power.So, how good are the punches?

Edit:I got some great answers which helped me understand.Thanks for that

Also to people thinking I am trolling or being disrespectful,I am sorry if it came off as that.

I saw some people saying things and wanted your opinions on it.I myself didn’t say it was bad or not powerful.