I doubt there is any politics to this. Giggs is a professional and for whatever reason doesn't want to use him. He's not going to hurt his own team just to get at a team who isn't his rival anymore.
I agree it is regrettable, and if we can bring him back early we should.
Look at current Wales squad
Wayne Hennessey (Crystal Palace), Danny Ward (Leicester City), Adam Davies (Barnsley).
Ashley Williams (Stoke City, on loan from Everton), James Chester (Aston Villa), Ben Davies (Tottenham Hotspur), Chris Gunter (Reading), Connor Roberts (Swansea City), Christopher Mepham (Brentford), Jazz Richards (Cardiff City), Ethan Ampadu (Chelsea), Paul Dummett (Newcastle United), Declan John (Swansea City).
Joe Allen (Stoke City), Aaron Ramsey (Arsenal), Andy King (Leicester City), David Brooks (Bournemouth), Matthew Smith (FC Twente, on loan from Manchester City).
Gareth Bale (Real Madrid), Ben Woodburn (Sheffield United, on loan from Liverpool), Harry Wilson (Derby County, on loan from Liverpool), Tom Lawrence (Derby County), Sam Vokes (Burnley), George Thomas (Scunthorpe United, on loan from Leicester City), Tyler Roberts (Leeds United).
Woodbur n is supposedly in squad though I've not checked tbh.
Look at who Wales have to pick for first 11. Bale i think was out. Wilson hot a game, Sam vokes played.
It was quite a defensive system with Ramsey up higher and 3 at back which in effects 5-3-2 formation.
Gigg s subbed on Brooks and Smith, who I know piss all about. And Lawrence too.
So clearly woodbur was about the only forward not thrown on .
But he was there.
Again should look at woodbur and ask what did he do to attract highs attention to put him in.
Imo he can't be doing it in training.