I’m old school with my mechanical Featherweight and 301, needle down into fabric, then presser foot down. Just like my 7th grade Home Economics teacher had on her list of class rules many decades ago.
The manual of my old reliable electronic Pfaff 1222 is very precise about what to do when you’ve completed sewing. It says turn stitch selector to straight stitch, needle position to central position, presser foot control lever to horizontal position which means presser foot is not down. The presser foot lever on this machine has 4 positions which control the needle position, tension discs, and presser foot placement.
The computerized machines are a whole different ballgame. So, it seems that the type and age of machine we use matters. If the machine is mechanical, electronic, or computerized makes a difference. One size does not fit all.