Nah... You just cannot argue with the results he's produced over the last year or so. We don't need him to take wickets. In fact if we'd had better seamers, we'd definitely have got a couple of wickets in the middle overs. Instead when Jadeja and Ashwin were keeping things tight and they couldn't store off them, they just decided to see them off because they knew the seamers would release pressure. You are clueless about Jadeja tbh. He's vital to our odi team
Since you prefer to pick players more because of reasons other than performance, here's why I don't believe he's any good. He's taken a paltry 113 wickets in 95 games. Compare those figures with those of less fancied bowlers like Stuart Broad, Lopsy, Clint McKay, Junaid Khan, McClenaghan, Kyle Mills or Southee. All of them have reached their milestone a lot sooner. Even Ishant, everyone's favourite punching bag and an ex-favourite player of mine, has reached his 100 wickets a lot sooner than Jadeja's 85, dubious as the figures are, and Ashwin, three short of his hundred, will get it a lot sooner.
He's been hyped up as 'vital to India's ODI team' only because of one honeymoon season beginning with an ODI series against Pakistan and ending with that ODI triangular in the West Indies. Outside that, he's got an average touching 40, a strike rate over 40, and stays only because of his passable economy rate. After that, in his last 21 games without a break, he's averaged 40, striking one every 50 and his economy rate is rising- only to be pulled down by a flash-in-the-pan figure. We can understand someone who's struggling with figures after 30, 40, or in Ishant's case, 50 games, but Jadeja has played over 90 games and still doesn't have a strike rate good enough.
Then look at his home/away breakup. Can't get more dreadful than that. Still vital to the ODI team? Maybe in internet jokes. What results? Even Yuvraj Singh had far better results, with bat and ball, for three years until a little after the World Cup. And he bowled with less protection, under more pressure.
Since you blame the seamers, whose legs everyone loves to pull, do keep in mind that Jadeja bowls with loads of protection, unlike them. Even Ashwin doesn't get that much cover. Merely seeing off overs doesn't help out- if wickets were taken, there wouldn't be much to take advantage of in the final overs. Much of the final overs' horrors are set up by long spells of mediocrity where spinners fail to get the breakthroughs. If Jadeja was sent into the same furnace as the seamers, he wouldn't last one over. Taking wickets makes a difference. None of Jadeja, Ashwin and Bhuvneshwar are up to it. As an India fan, it irks me no end when they persist with mediocrity, largely because of that one exceptional performance a season, and continue losing series after series just to sustain them.