Range gets weaker and weaker in general as you get to higher ranks because not only will you be a better player with access to more cards but deck lists will be tighter and more efficient.
This is not to say Ranged minions can’t be good, but the ones that see play are either free (Reva BBS) or are one-turn burst win conditions and not used for value (Jax Truesight). I think Jaxi might be the only ranged minion in the game that sees regular play and even he is declining quickly in popularity due to things like blistering doing a 3 mana 1 damage aoe.
Right now your deck lists are slow and cheap so ranged minions can plink away from a distance for value but this will change quickly. Later on when you develop your fire spitter they will drop a Nimbus and you can shoot it over 3 turns generating him three free minions while he is smashing your face in. That is assuming he doesn’t simply clear your minion with Ankh or AoE or leave it basically useless on the far side of the board with a siphon energy. This is just one common matchup at high ranks (Vetruvian) and you can already see the cracks beginning to show.
What if you are facing Vanar? A faction that can leave your buffed ranged minion useless or dead for 2 mana from anywhere on the map. Or can simply pull it over with hearthsister to kill with a general hit or Faie’s BBS.
Cassyva? She’ll be dropping creep all over your creatures and lasso’ing them back and forth while laughing at your pitifully slow deck as she builds up to the inevitable game ending burst. Lyonar will be happy to airdrop that ironcliffe on all your understatted ranged minions and watch as they flail impotently trying to kill it.
Don’t even get me started on songhai. Half the cards in a spell songhai list can answer ranged minions with little worry from Juxt to Mist Dragon Seal to OBS to direct damage. Or baconator combo will just ignore your low pressure ranged minions and build up a 1 turn lethal.
Bottom line is ranged minions are understated, slow, and vulnerable to removal and dispels. You might argue that dispels are strong against many things and you’d be right, but using a sun bloom on a Kron leaves a 4/6 and a 2/2 (14 worth of stats) behind while dispelling an identical mana cost rogue warden leaves a pitiful 4/3 that is usually on the other side of the planet from where the action is happening.