They also have to put up with all manner of political interference from Congress with regard to rates they can charge, what they can pay employees & what business plans they can implement.

The Post Office has been a political battleground for 40 years and it shows.

The “they are subsidized & squander their money” angle seems unfair given that. Personally I think they do a fairly good job.

That said I think it’s fair to say they are tax subsidized, it’s just not much of one.