This is an interesting and thoughtful discussion of the collision of meditation with science in the current age. The problem seems to be something like collateral damage that has resulted and that is your concern.
My strongest reaction is similar to another respondent, I don’t think it is as bad as you think. The most likely result will be failure to accomplish a quick and dirty scientific validation of meditation as a cure for a range of specific problems.
If you do not have some years of experience with meditation in one of the traditional forms you, simply, are not going to understand much of the discussion from those who do have that experience. If you are waiting for a scientific verification for specific benefits of mediation before you start I suspect you are never going to do it. If you do start and persevere you will become aware of what this is about and may well go looking for someone who does actually understand these things and can direct you.
And even if you don’t you will discover that there is more there than you thought and will end spending years doing, thinking, and realizing that the benefits were there all along and you were looking in the wrong place. And that is a benefit at a new level.
To me it has and does work that way. It takes years to get yourself aligned with what is and to learn to place all the anxiety and pain where it doesn’t get in the way of being happy.