50nl - the phock does this mean?

[Micro2Macro]

Villain is a winning regular don't have any history not sure if he knows me.

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

SB ($59.25)
Hero (BB) ($50.75)
UTG ($50.10)
MP ($20)
CO ($40)
Button ($53.50)

Preflop: Hero is BB with A, J
3 folds, Button bets $1.50, 1 fold, Hero calls $1

Flop: ($3.25) 5, J, 10 (2 players)
Hero checks, Button bets $2.30, Hero calls $2.30

Turn: ($7.85) 8 (2 players)
Hero checks, Button bets $5.25, Hero calls $5.25

River: ($18.35) 3 (2 players)
Hero checks, Button bets $21, Hero.

it seems incredibly awful to ever bet this big here soooo...uhh im pretty much at the top of my range call? he reps 55(3), TT(3), JJ(1), Q9(16), 97(16) but I think we can defo discount 97/Q9 cuz he prolly just bets the turn bigger with that lol balance. he also never value bets worse like this cuz he clearly fears value cutting himself like every other ssnl reg out there. he's also opening OTB so his range is significantly wider in this spot than if he had opened in say, MP.

what do you guys think?