That’s all normal for modern synthetic oils.
Up to 7000 miles or 10k kms is all good for fully synthetic api sn + oils of OK quality. Good quality oils go beyond that.
there are oils made for even 25,000+ miles or 40,000km in normal driving conditions. Same oil goes to 25,000km under severe conditions.
Check out amsoil signature series.
Heavy usage is defined usually as towing loads or running car idle all the time like cop cars.
Usually it’s a good idea to change the oil filter after 10,000km regardless of u gonna change at 10k km or 25k km.