I haven't previously heard about any wifi problems on iOS 7, but deleting comments of this sort has been Apple's typical MO for a long time. See: yellowing macbooks, cracked Cubes, Antenna-gate, nVidia GPU failures, etc.
Pretty much any time a problem like this comes up with their devices they suppress and deny for as long as possible until the complaints reach a crescendo and then finally they might do something about it without really ever addressing the period in which they were trying to delete the problem away.
Obviously this behavior hasn't hurt their ability to keep selling systems and devices to many, many people, so I guess they might as well keep going with what works for them.
Pretty much any time a problem like this comes up with their devices they suppress and deny for as long as possible until the complaints reach a crescendo and then finally they might do something about it without really ever addressing the period in which they were trying to delete the problem away.
Obviously this behavior hasn't hurt their ability to keep selling systems and devices to many, many people, so I guess they might as well keep going with what works for them.