No more so than Alonso being at Ferrari, Kimi at Lotus or Hamilton at Mercedes, I wouldn't think? And look at how many people were queuing up for the Ferrari seat.
I don't think having to team mate Vettel is going to make people think "you know what, I will pass on being in a Newey designed car in a year of new regulations"...
several big differences imo;
1) the obvious first - as discussed earlier, its still Ferrari (however much I hate the team) its still THE marque in F1 and probably will be for some time to come. Even in "bad" years, from a brand point of view its still better than driving for any other team. Most drivers would KILL for this seat, even if they don't stand a chance of competing with the driver in the other seat.
2)Kimi may be a very good driver (maybe even a great one), but he hasn't got the name / consistency of the others. He may be Lotus No1 currently, but it wouldn't take that much to oust him (for the record Grosjean is never going to do this)
3) The current Merc lineup is probably their ideal pairing. A huge headline maker along side a national icon (given how important nationality is to Merc inparticular). Still question marks about the car and about the team, and where personnel are fitting in long term.
4) For right or wrong RBR is centred around SV and has been for 3 years + , Im not sure whether Mark ever had a fair chance in the team, but if he ever did he certainly hasn't for a couple of years at least. Imo the ONLY type of driver that would go into this team is a very young charger who has impressed over the last year or two, more senior drivers imo have got too much to lose.
It may be a possibly worse car (in a - currently - not that successful team) but Lotus imo is the best team for a senior /experienced driver (inc McLaren, who Im still convinced will win races this season)
Yes I think a lot of people would be put of by how much RBR love SV, and imo last weekend confirmed this.