1. Yes
2. RAD is not an forte of Java, and startups need a RAD tool to build their MVP, so they can start looking for funds. From there, things move way faster and they end with whatever language/framework they built their MVP with. Performance, Maintenance is again depending on how they code! You can take any good language and code poorly to make it perform worst.
3. Nope. In fact, if you look at the growth of the java, it is gradual and not exponential. Java is working so well for big companies, they don't want to adapt a new language. Why do I use Node/Go if Spring Boot is doing a good job and I have no issues with it.

When it comes to big companies, they look for community support, number of resources available to hire, and cost of migrating to new technology etc, etc. It is not wise for me to train a Java guy to do a new project in Go, when I know he can do it very well in Java itself.

Startups need RAD, and Enterprises doesn't. That's it!

That which you namely call hate toward JAVA is actually love toward Javascript even more since Ecmascript6 on one hand, with class specification along with inheritance (before then, it was a curse to have you 50 classes enjoy inheritance) but also TypeScript (and alike) on the other hand.

Thank be given to the node project (NodeJS). Now javascript runs everywhere (client, server) and its build tools are very quick. Time to learn is short... Too short in fact: I did it in a matter of days (compared to more than a year it took me to get that J2E is human).

Furthermore, obfuscation solves (at least partially and enough for many) the problem of binaries in dist.

Hey Daisy, please have a look at the detailed discussions here:-