The realness of the healings are not evidence as to their source, which is why I posted the verses. The bible is clear that we can't trust healings. Therefore, what can we trust? How about the Word of God and the testimony of anyone doing any healing.
But who do YOU say performs the healings?
At BEST, and SAFEST, certainly, is to answer: "I do not know", because that is the truth - you do not know.
And because you do not know, it COULD indeed be demons, and therefore you must be properly cautious.
But it COULD be the Holy Spirit, too, in which case the Holy Spirit is performing this fountain of miracles, the only place like it, in a Shrine to MARY, where Marian apparitions are believed to have occurred 160 years ago.
If those healings ARE performed by the Holy Spirit, then the Holy Spirit's imprimatur, which is to say the approval of God, is on a place devoted to Jesus' mother, Mary, and that is a sobering lesson.
The moral: because you don't KNOW who is performing the healing miracles at Lourdes, do not mock Mary, and don't mock those who go to Mary's Shrine at Lourdes.
You need not take part in it yourself. You can entertain your doubts and hope that it isn't really a demon leading them all astray. But do not be led astray yourself by a demon of pride to assert positive knowledge about healing miracles when you really don't know who is doing them.
In the absence of certitude, given that the Holy Spirit is involved and blaspheming the Holy Spirit is a death sentence without reprieve, if you are uncomfortable with Lourdes and Mary, be thou silent. Do not participate, but do not mock either. You don't know enough to mock. And the penalty for being wrong in such a case is awful.
I tell people over and again the nobody gets a reward in heaven for mocking God's mom. There is no margin in it. None. And the price could be catastrophic, if you're wrong. Luther and Calvin were both piously respectful of Mary. That is the right answer. Don't pray to her, but don't use Mary as a "club" against Catholicism either. Because you don't know who is do those profuse healings at Lourdes.
You only know they are happening, and they are miraculous.
It's God or the Devil, that much is certain.
If you cannot tell, then be silent. There is safety in silence.
If you KNOW, then tell us.