Low ELO is where the largest base of players are. Traditional supports do not fare well in low ELO no matter how good they are because low ELO ADCs tend to have bad decision-making, poor follow-up, and related. This must be why strong mage supports have become the norm (? norm? I don't see them that often to be honest). It's why I gave up on my Soraka and Blitzcrank. It's why I Zyra--that and I can use her in mid or top should I end up there.
The problem with support is generally, in my opinion, that they rely too much on other players to be remotely useful, and when playing those roles, are shat on much more when people die to poor decisions. To cite general statistics I am kind of making up here: When I mained champs like Soraka, I saw 90% more toxicity from my team aimed at me for their death than when I play Zyra. I get 90% more compliments and honors playing a support that can set up kills, take kills, control the lane in ADC absence, hard-engage, and terrify the enemy bot team than I did playing someone who was there to initiate failed campaigns due to poor ADC follow-up and save ADC lives lost to standing under a turret trying to desperately get a first blood.
Keep supports. Just make more like Zyra, imo.