That is the plan by Anet, to delete servers. Too many people bandwagon to servers and demand a solution rather than strengthen their own community. In fact, most of these players in the forums especially the high post counts that are defending alliances as better than sliced bread, are the first to transfer off to another server for the most minor of reasons.
The grass is always greener on the other side; until they get there and realize that it is not, but they never realize the cause only looking at the symptoms.
People can invest in where they are currently, or they can flee like cowards to another server. Most want to flee like cowards and this is where alliances will help them not have to use gems to invade another community that does not want or need them.
In short alliances cater to your average WvW player that logs in a few times a year, complains in WvW Team chat about how bad X server is how and Y server is better. They cannot wait until alliances so they are finally away from X server; which will turn into "X alliance is so bad, Y alliance is better, I cannot wait until they fix alliances so I do not have to be paired with X alliance".
Then they can finally stop playing for a few years or indefinitely at that point because nothing has improved but will continue to post on the forum as if they are active WvW players. Anet is splitting up people that did not make it into 'alliance guilds' but have been on X server since release and never have transferred, likely the main factor of what X server has their good reputation. Often those players that will be left behind are the reason X server is so good and/or fun to play on/with, not the bandwagoning players that are gung ho because they transferred to X server day(s)-week(s) and now claim they are why the server has said reputation, but Anet could careless.
Further, most if not all of these alliance guilds will fall apart to e-drama in time, but let's act surprised when it happens "wow how did this happen, never saw that coming". Anet is shifting from a server structure to a power structure where 1 guild leader has all the power to ruin a server/alliance and only naive people would say "just reform" ignoring the damage that will be done each time this cause and effect happen.
Short sighted devs want to ruin what is left of WvW out of spite or ineptitude, or both. This applies to most of the forum warriors too, they want to see X server broken up because they are too incompetent to handle them in X+XvX much less XvX; the remaining are just too unable to see the forest for the trees.