BlueSky, I had my first in 1977. Maybe attitudes had changed by then, but I don’t recall anyone trying to discourage me from breastfeeding.
I still fed by the clock, every 4 hours as then laid down, and it worked well for about 5 months, by which time supply was dwindling - probably down to relatively early weaning then - I.e. starting baby cereal at 3 or 4 months.
TBH it was a relief when I finally got them both to take a bottle, since I knew they’d had enough, and it didn’t take nearly so long.
I was still sad when I finally stopped BFIng dd2 though.
Dd has always fed her 3 on demand, umpteen times a day (and night) and has fed them all for far longer, no problems with supply. So from that POV I dare say demand feeding is better, but it’s certainly more tiring and (from her experience anyway) means that you can ditch any idea of an early-established routine.