I think it is an issue as there is relatively little use for magic outside of combat after Act 1.
Also, I think all the people just saying it is per 5e are really either not understanding or downplaying how massive the Larian buffs to Sorcerer are. The Quicken Spell metamagic alone is *HUGE* and keeping it as a fixed cost of 3 Sorcery points (+1 vs 5e) regardless of spell slot absurdly low. Even things like the Haste buff allowing more spell casts per round is a larger buff to Sorcerers since it acts as an multiplier and can be combined with i.e. Twinned Spells.
There's also some other buffs to Sorcerers such as they getting an extra metamagic pick and an extra bloodline feature early compared to RAW. For example, the flight from draconic bloodlines is moved earlier to level 11 allowing you to get it in game. In contrast, Wizard progression is kept as per RAW which for keeps abilities like evocation's Overchannel out of player hands, even though it is supposed to be granted at the same level as flight for Sorcerers.
Larian also adds a lot of items that grant extra spell casts, which also helps the Sorcerer overcome their otherwise smaller amount of flexibility.
Wizards make better Summoners since Sorcerers do not get Summon Elemental. However, with the weird multiclassing changes you can just play Sorcerer 10/Evoker 2 - that way you sacrifice Sorcerer level 11 passive and a feat for getting the nice Sculpt Spell feature plus the ability to learn spells from scrolls from all levels (!) just like a Wizard.
You are right, but compared to older versions of DnD and to PF wizards are much weaker. Better to have a fighter (with three or even more attacks per round). At least Larian should overhaul concentration. And not allow even Goblins to move across the complet battlefield to go for your mage.
