Didn't bother to look more than the last hand. Assuming wsop didn't butcher the hand Ari's opponent misplayed both streets. With only a sub line that didn't work making some sense (that's nearly always a bad idea).
8842ss with less than 4 bets left you have to defend your blind, but you don't have enough to play for any kind of fit. There's 2 lines worth anything here.
If you think very little of your opponent you can call pre with the intention of betting misses (hoping your opponent folds equity) or go for the ck/ck line and betting the turn (with a presumable higher chance of inducing a fold). The ck-line protects your fits, if you think your opponent would be too bet happy, but risks a free card when sub 5% of flops could you afford that.
The second line is when you give your opponent any credit. Just 3 bet pre. Protect your equity that's always murky when it partly consists of middling pair holding for high. Flop play doesn't exist, so stop pretending like it does. Save your pre calls when you can fold flops.
The call pre and ck flop ls bad because it "balances" a range that assumes an opponent who's skitso/incompetent with the added bonus of removing your only cheap bluff that could work against a sane opponent. That bluff is also more about protecting equity that actually having any FE.
edit: the standard i got accustomed to from the WSOP reporting hands "Engel won after an epic heads-up battle against Zachary Milchman that lasted six hours and ended in a hand where Engel's two pair was good against his opponent's pair of eights." <- actually not possible with the action describing the last hand with a running pair.