Maybe not but it is valuable for us nonetheless. Working with a storage vendor (at least the way we do it and we are pretty unique in this) requires work from both sides. (And not only on the technical level) which means this is already a factor we should take into account. For example, storage vendor X might not be interested to work with us so that would be definitely already a showstopper
But learning what the field is using is also interesting for us. For example, when storage vendor Y approaches us but we see no traction or requests around it, we might not want to spend time on that vendor and instead work with a vendor which is much more used with our customers.
Hope it makes a bit sense
(But +1''s will definitely not be the only reason to make a decision