By the end of this year its almost a certainty that others will also have lower some that haven't previously. I really dont think its worth getting too bee in your bonnet about as I said last year when VS was reported to lower some RTPs I and others close to the industry said that others will follow suit and they have.
Yes RTP matters if your playing hundreds of thousands or millions of games on the slots in question but do you really think its going to make a difference on a game that has billions or trillions of game rounds to choose from?