The only potential nerf was shield dwarf. But even then it's too early to call a nerf.
Humans got a strait buff with the +2 main stat and proficiency an extra +1 in dump stats doesn't matter.
Similar story with half elves they lose 1 point in con or dex, not a big deal, and the light armor profincy for full casters is great.
We also need to see how good the racial weapon bonuses are to determine race balance
Also I'm not sure what you are trying to say in the latter part. Tabletop is thinking of going to pathfinder style where you can create you own custom genetics. Half orcs and half elves will still exist as potential combos in the new system.
Speaking of half orc a they got a huge buff and are great for dex classes now.
From what I gather, what he is saying is he is a play tester of the new system set to come out next august, he stats that the holder of the IP dnd no longer want Half/ anything no half orc no half elf as there is blow back from a certain community. And he also stats that Dwarves will be one race now no longer multi/ sub races
