Correct donk play

QUadruple shootout freeroll at stars, first round. In these typically, once the first half of the table busts, the play is pretty good.

I found this hand interesting. The winner only stretched his flop call a little bit. From that point on he was correct with play what we all hate to see anyone play.

PokerStars Game #27969718193: Tournament #159606339, Freeroll Hold'em No Limit - Match Round I, Level II (30/60) - 2009/05/08 16:16:49 ET
Table '159606339 801' 10-max Seat #8 is the button
Seat 3: michelle2019 (1250 in chips) is sitting out
Seat 4: July1987 (4165 in chips)
Seat 6: muron100 (675 in chips)
Seat 7: dj13 (2020 in chips)
Seat 8: bigenem (570 in chips) is sitting out
Seat 9: jlk59 (2060 in chips)
Seat 10: onarip (1260 in chips) is sitting out
jlk59: posts small blind 30
onarip: posts big blind 60
*** HOLE CARDS ***
Dealt to dj13 [Ts Jc]
michelle2019: folds
July1987: calls 60
muron100: calls 60
dj13: calls 60
bigenem: folds
jlk59: calls 30 decent stack, player after him, and one other are sitting out. He closes the pf action. IMO not a totally bad play. I generally don't make this pf call, but the odds weren't bad.
onarip: folds
*** FLOP *** [6s As Tc]
jlk59: checks
July1987: bets 120
muron100: folds
dj13: folds
jlk59: calls 120 3.5-1, this is only slightly below the 4-1 that completely justifies this call.
*** TURN *** [6s As Tc] 4♥
jlk59: checks
July1987: bets 120
jlk59: calls 120 at this point he has picked up a 2nd draw (gutshot) and is getting 5.5-1 Instacall.
*** RIVER *** [6s As Tc 4h] 5♣ bingo.
jlk59: checks
July1987: bets 120
jlk59: raises 480 to 600
July1987: calls 480
*** SHOW DOWN ***
jlk59: shows [7s 3s] (a straight, Three to Seven)
July1987: mucks hand
jlk59 collected 1980 from pot
*** SUMMARY ***
Total pot 1980 | Rake 0
Board [6s As Tc 4h 5c]
Seat 3: michelle2019 folded before Flop (didn't bet)
Seat 4: July1987 mucked [4s Ad]
Seat 6: muron100 folded on the Flop
Seat 7: dj13 folded on the Flop
Seat 8: bigenem (button) folded before Flop (didn't bet)
Seat 9: jlk59 (small blind) showed [7s 3s] and won (1980) with a straight, Three to Seven
Seat 10: onarip (big blind) folded before Flop

We all complain (at least to ourselves) about the donkey beats we suffer. Maybe there is something else going on.