I've been to nearly every home game for the past 4 years and gone to most aways in England and Europe.
Our away support is amongst the best in the league.
I was at the Fulham game when we were 2 down and Vicario whacked the free kick up the pitch out for a goal kick. Don't tell me we should have clapped that. As much as what you say is true to an extent, these players have had a lot of our support for a while now. They also need to take responsibility and realise that how they play on the pitch reflect the support they get given back. This isn't some happy clappers society, a lot of the fans going pay a lot of money, spend a lot time getting to and from games. They deserve to vent when things aren't going well as much as the players deserve support when we see them put effort in.
I've seen too many occasions where our players are jogging around. After the second goal conceded against Fulham, I looked at all our players with their heads down trundle back to the kick off. They got a lot of generous support from us, especially after the game when those of us that stayed actually clapped them off. But that was because in the final 30 mins when Richarlison scored they actually put some effort in.
The fans will respond to what is seen on the pitch. That's not unique to us. It's the same for all teams in all sports.