I'm not sure what is so odd about this or why specific travelers should feel discriminated. Attracting high value, low impact tourism has been the emphasis for years now. Aruba does not have the physical space for mass tourism and we have already surpassed the limit the island can realistically take. The marketing strategy thus changes so in the medium/long term the physical numbers don't need to keep increasing, but stays the same or reduces while the income is not lost or increases. The amount of tourists that come here blows all other destinations out the water on a per capita basis. I don't think people quite understand just how much tourism Aruba gets for its size.
Its not something that changes overnight. Addition of Ritz Carlton, St Regis among others for example fit into this strategy. It dsn't mean that the government is going to look how much people earn nor are they going to price out people that are coming now. The government does not control room or flight prices. However, the aim is to increase the average income of the average traveler. This is done by the marketing strategy over time, not any type of regulation or price controls.
Aruba is already not a cheap destination and it hasn't been. Its no Mexico, DR, Jamaica, PR or most other regional countries. An equal trip to one of these destinations is far cheaper than in Aruba, so that prices many people out and has for a long time already. At the same time, Aruba is no St Barts which is on the other side of the scale. Aruba wants to be closer to St Barts on the scale and not fall towards the DR, Mexico side of the scale.