Saw it in a video, what went wrong?

[iheartponeez]

.25/.50:
SB (Hero): 53.65
BB (Villain) [14.8/0/1.3/27]: 16
UTG: 50
BTN [32.3/16.9/1/65]: 50.60


Hero is in the SB with 4h5s. UTG and Button limp, Hero completes, BB checks.

Flop comes (1.90 pot): 5h 4s 8s.

What's your play here? In the video, here's what happened:

Hero checks, BB bets 2, UTG calls, BTN calls, Hero raises to 9.50. BB calls, 2 folds.

Turn comes (24.90 pot): Qh.

Hero bets 6.50, BB calls 6.50 all-in.

River comes: Js

Hero shows: 4h5s (2 pair, fours and fives)
BB shows: 4d8h (2 pair, fours and eights)

The video-maker was commenting on "hero" as he played and said, as the hands showed, "And he just had two pair. And he got smoked. That's...really bad."

He had been commenting on the player's leaks, and seemed to call that hand badly played. What was the problem there? Does the c-r on the flop only fold out hands that are better than yours?