That may be your opinion, probably even the opinion of most top tier raiders, but there is definitely a sense of elitism among at least some, you can tell that from the contempt a lot of them express when talking about the mid tier guilds. As for higher tier raids being harder....that is not always true. Historically there are usually some bottleneck raids early on in the progression, with higher end raids often being loot pinatas. If you can't get past one of those bottleneck raids because you are lacking in some aspect it does a check on, then you can't do those raids further down the sequence which don't have that check associated with them. For example, in EoK Prince was by far the easiest raid, but it is tier 2. Likewise in RoS Crypt Robbers is the second easiest raid in the expansion, but it is also tier 2.