Most everyone who is actively in an IF regimen here will do it every day. Many will do 16, 18, 20, and 23 hour fasts every day for years. I don’t know of any issues specifically related to fasting every day. 16 hours isn’t really that long.
You are finding that it’s best not to talk to others about fasting. You’ll get a lot of advice you didn’t ask for. I do 36 hour fasts every other day and absolutely keep that to myself because I know there are people in my circle who will tell me I’m about to die from it.
Fasting is perfectly healthy to do consistently (if done correctly and listening to your body). People can OMAD or 20:4 or whatever as long as they consume proper nutrients while they eat and/or supplement salt/ potassium/magnesium while fasting. All you’re doing is pushing back what time you eat. Nothing wrong with that