Totally agree with the OP. I wouldn't boo the team if we had got twatted 5-0, we just don't do it.
What I will say though having stood in the 200's on the KOP today, it wasn't 'a few' that booed. It was a large proportion of the ground and it was at a time in the game when the fans were already majorly fucked off with the way we were playing.
For those at the game, you will remember a point on the 1st half where the atmosphere was literally toxic at our back 3, when we rather pathetically trying time and time again to gift Chelsea a goal by passing the ball aimlessly around our box. That was the 1st half. It was still 1-1 but we see the signs, the play was shocking and people were getting anxious and frustrated. We've seen it before this season. We travel all across the country and across Europe and watch us play like this and can see what's coming.
By the time the rather ridiculous substitutions happened, our fears had been confirmed and we had conceded another sloppy goal and were now losing.
We're not talking of a few boos here. I was stood in 206. We're talking of regulars. STH's. Scousers. Reds of the older generation. I said in the post match thread that we're not idiots. We know who's playing well and who's playing shit. Out of Gerrard, Can, Coutinho & Hendo there were 2 players that should have been dragged off and there were two who had actually impacted the game and looked a threat. Every red watching the game knew this. We chose the wrong two. At that point, its seems that people had just had enough. This is 11 games of frustration in one fair swoop.
Im not condoning the booing because I didn't do it myself and I don't agree with it but the whole situation stunk and I think it was a slap in the face to all of the supporters (including myself) who have supported Brendans decision to drop those players on Tuesday. It seems he didn't drop them afterall. His subs weren't based on form or 'wanting to create more chances' like he said after the game, it was because he didn't have the guts to pull off the biggest player in the clubs history even though it was clear he was one of the worst performers.
The one thing that makes me think it was an isolated incident was the fact there were no boos at full time. Booing at any time in my opinion is wrong, but I think its only right to try and understand why tens of thousands of regulars, STH's, scousers etc had that 'moment'.