You can make Tempeh at home: the colonisation is ~24/72h. Super nutritious and if well cooked strong umami taste like wild/farm meat, compared to sweetysweet nugget.
Soy products contain high levels of plant-based estrogen, not something you want to pump your body with continuously. Or does the process of creating Tempeh somehow removes/inactivates this?
My understanding is there isn't much evidence of a link between soy an almost anything positive or negative (unless you have an allergy). "Plant estrogen" is different enough from human estrogen to be at most a weak form of the same.
They do, but are mostly armless if consumed reasonably: don’t eat the same meal every meal!
A sheep got complications in the 40´s although no strong adverse effect have been found off human despite many studies and big consumption in Asia since a long time : 40mg/d in Japan/China while 3mg/d in EU/US (1): you may safely x13 your soy consumption if you live in the west.
Don’t worry either if you’re a men, you’ll be just fine (2)