Webber, however, is ignoring such speculation, and showed signs of resurgence in the previous grand prix at Valencia when he was closer to matching his team-mate Sebastian Vettel's pace than in other recent races.
He is confident that momentum will continue this weekend at Silverstone - where he feels the ban on off-throttle exhaust blown diffusers may even aid his cause.
"I have a very good understanding of what's going on, and I'm very relaxed," Webber said.
"There's a lot of talk but tomorrow there will be a new story, that's how it is in F1. I feel as relaxed as I did at the same time last year when I did have a contract, so I'm sitting very well.
"Monaco was a bit of a black sheep, but in Barcelona I was pretty competitive, and then in Canada and also Valencia I was very competitive. When I've had a smooth run and had no technical issues I've been going a lot better. There's no reason I can't keep that going and I will do I'm sure.
"We don't fully understand [the impact of the new regulations] until tomorrow's session. There's going to be subtleties in driver style which could go either way - we know how sensitive the cars are sometimes to driver preference.
"I'm getting pretty quick with what we had, and if we have to change I still think I can do a good job so I'm relaxed either way."
Webber also insisted he has not lost his hunger to beat Vettel, and said he was looking forward to disrupting the current harmony he believes exists in the team as a result of the German's current superiority.
"[The team] harmony is perfect when results are like this," he said. "I'm not tired of [fighting] at all. It's the same for all of us - you want to do well and get the most out of yourself. We've got some more improving to do and then we can do better.
"I'm not the only guy fighting Sebastian though. He's had a great run but we've got a lot of races to go and a lot of good opportunities. What's gone before is past - a lot of points for him but not too bad for me either - but I would love to start winning and I'm not the only one."
Silverstone will also mark the F1 debut of Australian Daniel Ricciardo with HRT, and Webber had some advice for his compatriot.
"I know how unique and special it is to compete in your first grand prix, for any driver. He fully deserves to be here and it's the early apprenticeship.
"Even if he went for glory you wouldn't see that he did, so [my advice is] just to accliamtise to how an F1 weekend goes. There's a lot of fine print that a driver has to get his head round, it's not just about driving a car. I love competing in front of the English fans, and finishing your first grand prix is going to be a nice feeling whatever car you're driving."