You seem to have very little experience in this game, so the issue with being a melee focused class is that melee is often not an option in endgame. Hunters aren't limited to a "ranged" class. If anything, they currently do melee better than Titans, so I'm not sure why they try to silo Titans to a melee class.

Titans have ranged attacks/ abilities and suppers, but they are still built as the melee/ close ranged combat fighters. / tanks.

As I mentioned, close fighting is often not an option. We have one ranged super, the other is a roaming super that can attack at range but is not a viable dps option.

Titan Supers: Thunder Clash: Long Range (LR) Fists of Havoc: Close Range (CR) Ward of Dawn: provides other benefits for self or team Sentinel Shields: CR+LR Twilight Arsenal: CR+LR Burning Maul: Medium Range (MR)+ CR with exotic for even more damage, or CR without Hammer of Sol: LR Glacial Quake: CR, but used with Ager’s Scepter, it can be LR. Bladefury: CR+LR Prismatic: all those supers are built for long range. So no you don’t have just one long range option as a titan. Depending what exotic weapon/ armor you use, along with the build-crafting you do, I am sure players can make LR Titans do a decent amount of damage. The identity of being the tank melee/ close-range fighter is still there for the Titans, with several LR supers also available. You pick titan to play a certain way, you pick hunter or warlock for other gameplay options. If players don’t like that identity, they should probably play a different class. They might also want to consider, other builds and new gameplay loops to try out.

Thunder crash is a close range ability. Everything else you mentioned Is also non-sense. Clearly, you have little no experience in endgame with Titan, so we don't have anything else to discuss. Have a nice day.