I am fine if trophies and maybe titles stay exclusive but mounts/minions and maybe even the gear should be availeable through other PVP means. Not only is the top 100 a really small amount thus a lot of people will never get it, no matter how much they try, but we also have no rank decay thus people will just sit on their wins thus taking away the chance for others to get high but there is also at least one FC that sells PVP ranks..and if there is one, we probably have a couple more..(and lets not talk about PVP cheaters) All of this makes it really hard to even get the reward and I am quite sure that people would surely hate it too if raids for example only had mounts for the first 100 people that cleared it, or only weapons for a very small amount.
In the end this reward structure probably is not a good incentive at all and imo just means that SE throws all the money and time out for mounts that are only meant for a couple of people but were wished by PVE players too.
I have nothing against exklusive rewards if they are not time gated or limited in number. And that is imo the problem with the PVP ones. They are both. You can mostly just get them in a certain season and if you are on a certain rank. Ultimate for example and all the weapons behind it are fine for me because someone could try Ultimate in 2 years and the rewards would still be there. Rewards with a limited amount are not fine as long as cheating, selling and using alt characters exist..I could already see it..New Ultimate where only the first four groups will get anything...thus you have a world first that just go into this with their alt characters or sell it fast to others to get more money and everyone else that also did a great amount of work and great skill and beat it afterwards gets nothing..thus a lot of people would probably not even do it out of protest..PVP is the same. There is no rank decay, you have cheaters and sellings and people even use their alts to get the mounts..mounts that someone else could have gotten on their main..Something like that just brings out the worst in some of the players that will try to do everything to get as many of those limited mounts as possible..