While what you say is true in a way, you should not forget that ALL Clerics can use shields too, which I feel is much better for a Cleric subclass that wants to be in melee. Because Clerics don't get Extra Attack having a higher damage weapon is not that big of a deal I think.
Out of 7 Cleric subclasses 4 get Heavy Armor proficiency (Life, Nature, Tempest, War). Tempest and War also get Martial Weapon proficiency, so they can get all weapons regardless.
We will have to see what Larian has done with the LVL 8 Cleric subclass abilities - those added extra damage either to cantrips or 1 melee attack, depending on subclass.
And we will have to see what the REAL final game character creation looks like and what changes they have made to the races.
