At his home team, Pidcock needs to prove that he is near Josh Tarling in ITT and could easily drop Bernal and CRod on Cat 1 or HC climbs, to continue the hype of future GT contender.
If he was not British I guess it would be "easier" to give up on being a GT contender and focus on the classics. I.E. if he were Belgian, Dutch, Italian, Swiss, Danish or even maybe French!
Partially because of the media landscape and perception of stage racing vs classics in Britain.
In terms of men's cycling GB has:
GTs: 11x wins (Froome 4x, Wiggins 1x, Thomas 1x, Yates 1x, Geohagen Hart 1x)
Monuments: 4x wins (Simpson 3x, Cav 1x)
I believe that alongside Spain, Britain is the only bigger cycling nation with such a big disparity towards GTs. (ofc part of that is where Monuments take place so prestige of them there and how suited guys are as a result)
Of the top ~20 British road cyclists of all time? 18-19 of them were either GT guys, TT guys, sprinters or those who favoured stage racers.
And TdF dominates the landscape more than most "cycling" countries I feel... having lived in 3 of the main ~8 cycling countries in Europe.