No, actually "please" means please.
PLS means; Primary lateral sclerosis, or Pacific Laser Systems; or Performance Learning Systems, or Pacific Laser Systems, or Peninsula Library Systems, or Palletized Load System, or Playlist file, or Pohang Light Source, or Programmable Limit Switch, or Personnel Locator System, or Plumb, Level and Square, or Place Last Seen, or Programmable Logic Sequencer etc etc etc...
obviously pls can mean one of a zillion things, depending on context. It’s [that means “it is”] depending on context - which none of your examples take into account - which makes your post irrelevant.
The post only serves to tell us that you are old.