I had a similar opinion when I was buying that phone - pretty much every phone had a fingerprint scanner and people generally didn’t complain about them, so decent scanners should have been mass produced and cheap - but HMD/Nokia managed to make me reconsider that opinion.

For context, Nokia 5.3 is a 3 or 4 years old model, so it definitely doesn’t disprove your statement, but I remain sceptical.