Hi
It's he who talks rubbish ;-)
I've never tried this approach, the copper layer is under greatest stress when it is levered up or down. IMO you would have to be a bit brutal to pull the copper away. I've only ever pulled copper off when trying to desolder and being a bit rough because I couldn't get it to move. Even then it was a single hole not multiple as with this device and it was at the end of a 1.25mm track. I know the signal/supply pins don't add much strength, but it all helps to stop the socket moving.
Depending how it fits and how far the socket protrudes, the housing around the socket can give some support mainly by reducing the ability to move the plug up/down/left/right, etc.
I guess you could fit a U shaped piece of wire over the tab using a via either side. i.e. 4 vias in total.
Then solder both sides, this would definitely make it stronger, resisting up and down, side to side and backwards/forwards pressure when inserting/removing the plug.
Looking at the shape of the socket, it might be a bit of a fiddle! The lugs don't look very big and they are recessed under the socket's body. I can't tell from the data sheet, but it looks like the surface that the lugs protrude from might be solderable too. In which case you would have a relatively large surface area soldered on either side or even all the way across.
If not a generous helping of solder on the lugs would expand the surface are of copper used.
What would I do? Use it as it is, using as much solder as reasonably possible to reinforce the lugs.