No, it's not. The limit of new is universally capped at 85k. They can request as many applications as they want. The lottery still only picks a total of 85k
They were not because in a layoff you cannot prefer a specific protected category like race, gender, age AND nationality.
The 9000 number is also a global number which includes layoffs in countries all over the world.
The argument “9000 US workers were fired and X visa applications were applied for” is also very reductive. The layoffs were in gaming, sales and other divisions, meanwhile the visa applications were for people who either already are on visas in other divisions like engineering and are continuing their status or for people in newer positions that have nothing to do with sales or gaming.
No, you're wrong too. The 20k is the Master's cap, only applicable to students who did a Master's or above in the US. Cap exempt refers to H1bs granted to US/State employers, who can get H1bs for employees without any cap whatsoever, and at any time of the year.