A) None of the Nintendo bashing will stop. Since people bashed Nintendo during the Wii/DS generation, just about different things. People will always bash Nintendo.
B) No one has ever said Nintendo is in any danger of dying, since they aren't. They have billions of dollars of cash on hand and dozens of extremely profitable IPs that are the envy of every other entertainment company on earth. The criticism from those people isn't about trying to save Nintendo from death, it's about increasing their short-term profitability to shore up their stock price, since it's so low.