Hiring engineers is hard. Unless you’re in a very large company with complex internal politics, you can tell your manager literally anything and they’ll be fine with it. Most managers have been taught that engineers need excitement and growth and so they’re offering it because trying to retain you, they’re trying to avoid you being excited by something new and shiny. “I am happy and want to stay exactly where I am” is music to their ears, shout it from the roof tops. I wouldn’t take any lessons from layoffs.