Has White A Win?

THE key position from the top-board game in round five of the 23rd 4NCL U2000/175, which finished today at a Holiday Inn on the outskirts of South Normanton, Derbyshire.

White to make his 23rd move in Geoffrey M Brown (1861/172) - Spanton (1927/168)

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23.Kf2
This is liked by Stockfish10 and Komodo10. But I breathed a sigh of relief when the move was played as 23.f5!? surely entombs the black bishop, eg 23...exf5 24.gxf5 Rfe8 25.Rf3 Re5 26.Rg3+ Kf8 27.d4 Re4 28.Bd3. Am I missing something, or are the engines unable to evaluate the position properly because the effect of the bishop's entombment is beyond their horizons?
23...f5! 24.Rg1
If 24.g5, then 24...hxg5 25.fxg5 f6 with equality.
24...fxg4 25.Rxg4+ Bg6 26.Ra1 Kh7 27.Rag1 Rg8 28.Bf3 f5 29.R4g3 Bf7 30.Rxg8
30.e4 is slightly better for White, according to the engines.
30...Rxg8 31.Rxg8 Kxg8 (½–½ , 40 moves).
My final score of +3=2-0 saw me gain 11.4 Fide elo, and was an ECF grading performance of 185. I shared first place with one other player, and we should each receive £375.