Got a little bit carried away with the Ne5 motif.
1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Nc3 Nf6 5.Be3 a6 I like the a6 move, if a modern player pushed 5...c6 they'd also have to have another response to this move order:
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 a6 5.Nf3 Giri has plaid this line with white extensively, a good fit for both the Pirc and modern:
It's principled in the dragon to place a pawn to e5 after the bishop trade right. Wouldn't it make sense here too?:
6.Qd2 O-O 7.Bh6 Nc6 SF is initially not very happy, but some of the lines do milden out. I won't post them yet, too much inconclusive stuff.
7...b5 8.Bd3 Nc6 9.Bxg7 Kxg7 10.e5 dxe5 11.dxe5 Ng4 12.O-O-O b4 13.Rhe1 Is still considered a problem from what I understand. The machine gives 7...c5 which looks to lead to reasonable positions.
The a6 line looks solid outside of the Bh6 business:
7.Bd3 Nc6 Works comfortably with the familiar Ne5/e5 central scheme and some well-timed issues with Ng4 and b5->b4.
7.O-O-O b5 8.Bd3 b4 Just have to spam more TCEC games, but this one is truly remarkable.
https://www.tcec-chess.com/archive.html?season=23&div=ne2&game=63 SF fancies that 20.Ra7 was a big error and gives Nd7 +a minor edge for white, doesn't really say much given the actual position though.
8...b4 isn't the only move there, in fact, the computer suggests 8...c5 again. The lines there look far calmer and very playable.
I don't think that this line would be classified as a classical Pirc though, maybe there is a thread/discussion on it?
About the previous game, yep it was plaid with a relatively quick time format it is definitely not optimal play. I think it's nice to see engines getting confused for once, that Rg8->Rf8 was surely a genius way to provoke h3.