I think you are overestimating the ease of breaking in. Out of 800 job posts in the ask HN hiring thread this month, only 2-3 mentioned they are willing to hire junior devs.

This is a biased data set of course but you will see similar patterns across the board. Even people with degrees, it's getting hard to break in because most companies have realized that hiring senior developers is better value for money.

In tech, you are also constantly tested regardless of how many years of experience you have. This doesn't happen in other field at the same frequency so you don't get to slack off if you want to switch jobs.