Salah was dropped to the bench at Elland Road and was unable to add to his 19 goals for the season after coming on in the 71st minute.
It was a big blow for his backers, who would have been hoping for a repeat of Salah's hat-trick and 20-point haul in Liverpool's 4-3 win in the reverse fixture.
To make matters worse, Salah's blank came after a 12-point haul for the Gameweek's most-selected captain, Harry Kane (£11.8m).
GW32 most-captained players
|Player||Captained by ('000s)||Points|
The most-popular captain for the seventh time this season, Kane was backed by more than 2.3million managers, a total that has been bettered only twice in 2020/21. He was also Triple-Captained by 359,000+ others.
But Kane missed the 2-1 victory over Southampton with the ankle injury that forced him off during the closing stages at Goodison Park.
The Portuguese had produced at least a goal or assist in seven of his previous nine appearances at Old Trafford.
Most-captained by top 100
The leading 100 FPL managers agreed with the masses, overwhelmingly backing Kane with the armband.
Son Heung-min (£9.5m) came in second place, ahead of Salah and Raheem Sterling (£11.2m).
Son blanked at Everton but scored a 90th-minute penalty against Southampton and received maximum bonus points that brought him level with Kane on 12 points for the Gameweek.
GW32 most transferred-in players
|Player||Transferred in by ('000s)||Points|
Kelechi Iheanacho (£6.1m) and Jesse Lingard (£6.6m) topped managers' shopping lists as they took their red-hot form into Gameweek 32.
Iheanacho netted Leicester's third first-half goal against West Bromwich Albion on Thursday, taking his tally to eight goals in his last six matches.
GW32 most transferred-out players
|Player||Transferred out by ('000s)||Points|
Injury and rotation were the driving forces behind the sales of the three most-transferred out players.
Dominic Calvert-Lewin (£7.5m) missed Everton's draw with a groin injury, while Aaron Cresswell (£5.8m) was not in West Ham's squad at St James' Park.
Despite being Man City's leading goalscorer this season, Ilkay Gundogan (£5.8m) had failed to start any of his side's previous three Premier League matches.
Such uncertainty prompted more than 395,000 to part company with the midfielder and, although the German did make City's starting line-up on Wednesday, he returned only one point against Villa.
Also in this series
Part 1: FDR Analysis: Brighton can provide short-term value
Part 2: Part 2: FPL team news: Calvert-Lewin back for Everton
Part 3: GW32 Bonus points: Evans shines for Leicester
Part 5: FPL Saturday review: Lingard rush continues
Part 6: What to do with Kane and Son for Blank Gameweek 33?
Part 7: FPL experts: What to do with Son and Kane
Part 8: GW32 Monday review: Alexander-Arnold on form