It's a total false economy to assume that buying new, expensive gear will improve your performance in any respect. I'm able to play single figure handicap golf with ping irons that I bought in 1997. Would buying the latest set for £1k make me a scratch golfer? No. Will buying a £6k bike knock 5-10% off my time trial performance or make me win the club hill climb? No.To quote a friend of mine - "When I turn up on a forty five hundred pound bike & get dropped like a stone there's no place to hide. There is only one thing that is the problem, that is me."
If I could afford to though, would I spend £7k on new irons and a new bike? Probably, yes! By our nature most of us enjoy having nice things and if your disposable income is at a level that allows this then go bloody nuts!
Of course if you don't have the gear you've always got an excuse. I've uttered them myself.
"my wheels don't have blades spokes" "I'm under geared"
"the technology is over two decades old"
Essentially though the difference between my carbon Boardman and that the bike in the OP is marginal. It's a lot better of course but it's me that powers it and it's me that swings the golf clubs.
People who spend silly money buying expensive bikes to improve their performance are kidding themselves but to buy them because they like them and can afford them it's no issue at all.