Not at all... Chaos's entire line of what if, why does, & why doesn't it. If chaos wants to argue that spell versatility is stepping on the toes of cleric & druid, he's welcome to make that claim, have it dismissed as absurd, & shouldn't be surprised when it gets pointed out that such a position weakens his other arguments downplaying the problems caused between sorcerer & wizard with this UA. That should not be surprising.
I have never made such a claim, so you have dismissed an imaginary argument.
Congratulations, have a cookie.
The point isn't "this will happen all the time" but rather it smashes a spotlight and draw for the wizard class.
The draw is making a collector of arcane knowledge: for the cost of working at it and making it part of your character, you can get spotlight time and solve problems.
Now, every known spells class gets a similar ability without any in-game or bookkeeping cost. And practically will have a larger list of swap targets than all but the most obsessive wizards.
It was true that clerics and druids could already do this; but wizard spell lists overlap with sorcerers and bards more than clerics in both kind of spell and specific spells.
I mean, imagine if wizards automatically knew as many spells as are on the sorcerer or bard list, instead of 2/level; because that, basically, is what bards/sorcerers get.
They where #3, behind clerics and druids, for the ability to reconfigure their spell load. After this change, they are now last out of the "pure" casters.
Really? You find wizards day by day are switching most of the spells they have prepared?
Usually you find a good set of spells, and you tweak it.
Having access to a large list of spells is more important than how fast you can mass reconfigure. There are piles of spells that are useful in narrow circumstances; "I'll get rid of all of my fire spells and swap in ice ones" is sometimes useful, but if you where a fire spellcaster then you probably have items and feats and stuff that make your fire spells better anyhow.
I mean, do you really change almost all of your spells that often? In actual play?
I double quoted you here, because your second post is exactly why I have been defending Spell Versatility. How often is a Sorcerer really going to use this? At 10th level (close to the end for most campaigns I've been told) they have 11 spells known, that is two for every level and a bonus. Two spells of any given level. And to use the versatility ability, they will be getting rid of one of them for something else. This is going to be rare.
Meanwhile, the Wizard has a pool of 24 spells to pick from. They have double the spell choices of the sorcerer with no additional resources spent, and no spell versatility.
Now, yes, I get it. Spell versatility means they could potentially have
any spell... but they could have also just picked that spell normally. So, from a DM campaign design perspective, nothing is really changing.
But for a player, this can be huge. You know all those "piles of spells that are useful in narrow circumstances". Most Sorcerer players never touch those with a 39 1/2 ft pole, because a single spell is far too valuable to waste on something that only applies narrowly. With this, they might get a chance to use it.
And I don't see how this ability changes the wizard as a "collector of arcane knowledge", a wizard player in a party is still encouraged to do what they have always done. They still get a huge benefit from gathering and scribing spells. It is just that now the players that had to wait til they leveled up to swap a spell can do so on a long rest.
And really, if it is something you didn't have... aren't you glad someone was able to get it? I mean, I'm not going to complain if it is the Bard casting Dispel Magic to cure the princess instead of us going on a week-long hike to the crazy hermit's tower for me to make my own copy. I still want a copy, but they solved the immediate problem, and the group is better off for it.