The bike is unsafe as van Schip in that position has limited control over the bike. It's the same reason why TT bars are banned, even the triathlon ones which have brake levers. It's hard to manoeuvre that bike, especially within a peloton and with corners. It's really quite simple.
As to the claims 'he has written approval for the bike' – we have no proof of this. For all we know, van Schip got approval for a bike with different measurements to the one he used. Given his record and penchant for these stunts, this wouldn't exactly be surprising.
Just looking at the photos posted of the bike on X and here, there are obviously questions regarding the flare of the handlebars, the width between the brake hoods and whether the most forward tip of the handlebars is within 100mm of the front wheel axis.
I don't understand why people are rushing to defend him. He's used a barely maneuverable bike in a mass start race, and attacked to get TV coverage for it. If someone turned up to a crit with that bike people would be annoyed, and rightly so.
I know first hand some riders weren't happy with Van Schip, but more so because they find it an unfair advantage (and it is, for sure, an advantage, whether it's unfair, see below).
There are some points here I would like to separate:
1. It's ugly. I think we all agree. But that's not the reason for allowing / not allowing this blasphemy of a bike setup.
2. It's dangerous. I said there is no evidence it's unsafe, but I admit that's just based on the fact Van Schip himself hasn't crashed (that we know off) with this set up / because of this set up. So we simply don't know, we only know that there hasn't been an incident. Would this be different if Van Schip raced more on the road (he isn't very active in road racing)? Or if the whole peloton raced with this set up? Or is it truly dangerous and would an accident just be around the corner waiting (and now prevented by his DSQ)? We don't know. But one cannot claim, at the moment, it is dangerous. One can only suspect it doesn't improve safety and will likely decrease safety. Whether that's a decrease that's unacceptable... I leave that out there. I know from own experience that narrow bars (I ride one bike with a 38cm and one with a 36cm, coming from 40 and 42cm before) hasn't changed anything for me in terms of handling the bike.
3. It's forbidden. That's the thing... His DS (mr. Tabak) says, and I quote from wielerflits: "His seatpost is deemed not to meet UCI requirements, but he's been riding with it for a number of years and has documentation that it is permitted."
https://www.wielerflits.be/nieuws/v...ificatie-hij-heeft-goedgekeurde-documentatie/
So according to his DS, the race jury was fine with Van Schip. The order to DSQ, came directly from Switzerland / the head office. Once can ask himself if it was Lappartient himself who choked in his afternoon tea when he saw Van Schip attacking, live, on TV, and ordered an immediate ban, even though his own UCI approved jury in the race admitted Van Schip. So is it forbidden? Or is it allowed, but is the UCI re-interpreting rules on the fly, and how fair is that towards a rider in a stage race?
Am I sympathising? Yes, sort of: I think Van Schip is a lone wolf, an outlaw, who tries to stretch the boundaries of the rules. I sympathise with these kind of guys. But I'm OK with banning these kind of set ups, because I'm sure it gives him an (unfair) advantage. But let's not forget that Van Schip is very, very tall, for a cyclist. I don't know the details, but I have read somewhere that extremely small or big riders get exceptions from certain rules. So I would think Van Schip used that to his advantage. But he maybe went a bit too far.