NFS is shit anyway. It has no proper security unless you want to set up something like Kerberos (a major PITA)
The state of whether it’s an ad has to be somewhere clientside as the ads can’t be skipped by the user.
You can’t argue someone out of a position they didn’t argue themselves into.
creality ender v3 se is a good entry level printer. I bought one earlier this year. Despite its low price, It’s easy to assemble, has auto leveling and makes decent prints. You cant go wrong for the price.