There have been an increased number of people transitioning under the new, more relaxed system and as adults via informed consent, but that doesn't imply anything other than there was a pent up demand not being met.
Regret and detransition have been vanishingly rare under this system, now under attack, even among minors. Most people who detransition do so because of financial problems or social pressure, not because they're not trans, and go on to transition later in life.