No there are not. There's a massive information imbalance. Most companies do not make enough information public for workers to truly assess whether their growth is sustainable or not. Public companies have to file a certain amount of financial information, but they are very good at playing games with that information to mask their true financial health.
Workers have no choice when it comes to positions where they might not be needed. That could be true of literally any job someone might take. And workers pretty much never have the information to accurately assess for themselves whether or not they think they are needed until they are in the job. Every job a worker takes is a risk in which they are asked to trust the company hiring them not to turn around and immediately fire them.
> Who enjoyed significant salary increase due to higher demand for their skills, increasing the cost of their labours while asking for increased benefits such as flexibility, work from home, etc ? Again; workers
Work from home and flexibility are mutually beneficial. Knowledge workers perform better when they are able to do their work in the way that best fits them. This is not some benefit the company pays to hand out, it's the company structuring itself in a way that most benefits it.
As for salary, tech workers are still underpaid. Tech work is not factory work. The companies revenues are entirely generated by the knowledge, skills, and work of the workers. There's no physical machine the company is adding that allows the workers to do their work which they couldn't themselves easily acquire. The very fact that profit exists in tech companies tells you that workers are being underpaid.
The only thing capital brings to the table in a tech company is the ability to operate in the negative - to scale head count (and thus to some degree productivity) faster than revenue. That is not something any tech worker needs, and most tech companies almost certainly could have grown far more sustainably by growing along with their revenue. That is something capital pushes, hoping for outsized returns on the grown on its investment.
So, again, who should be suffering the consequences when the economy turns down? Keep in mind, paper losses of a falling stock market are not true losses for investors. As long as they hold through the fall - assuming the company doesn't go under completely - they'll most likely recover everything and more, but losing a job and therefor income can be life changing for a worker.