You buy this kind of vehicle...which for the purpose of discussion is "motor-cycle derived" albeit with a heavy automotive gearbox...and one ought to expect to have to do some kind of minor maintenance as an owner, and for some owners, all of it...there's not too much that is taxing, remember.
I don't buy a £34k vehicle and expect to be doing minor maintenance any more than I buy a new learner scooter for my kids and expect to be doing that!
Motorcycles aren't mechanically needy, noisy or oily when new any more than their owners aren't all bearded tattoo freaks, and the perpetuation of such stereotypes does little credit for your points raised.
To put the ownership thing into perspective, I bought a year old Ural sidecar outfit a while ago. The outfit had been bought brand new by an Aussie who had toured the UK before selling it back to the dealer and flying home.
Urals are made in Russia, and are generically an air cooled flat twin with a five speed gearbox and shaft drive. They have a reputation for being very home maintenance as that's how it's done in Russia. I understood this when I bought it, but in the year I had with it I never even undid the tool roll. It never leaked oil, never failed to start and never lost anything when on the move. In short it was a cracking outfit.
It too was a parts bin special, with wiring loom and connectors made in the USA, alternator from Ducati, brakes by Brembo, switchgear from somewhere East.
I also have a T140 Bonneville Triumph in the garage, and my M3W leaks more oil than that onto the garage floor!!
I have a right as a consumer to expect a product that is fit for the purpose of use. To date the M3W is on VERY thin ice..