You have more flexibility in time than most. Dive in! Build stuff and see if it lands. You don’t have to finish your degree, though doing so is a wise default if nothing life-changing is landing. If you’re early to mid-senior year and the market is still this frothy, start making moves towards doing a masters degree. Unlike a Ph.D., masters are effectively professional and make you broadly more employable. And if while you’re in there you see market movement in an area of focus that you like, or you fall in love with a specialization, or the market is simply godawful and you need to delay your entrance, a doctorate may be viable as well.

All of which to say: the market is frothy and irrational, but you have a lot of optionality around timing your entrance.