Why does Spring boot not support jsp while it can render the page if we add proper jar reference

Question

It is written everywhere that Spring boot does not support jsp view. In its official document there are three reasons

• With Jetty and Tomcat, i

Answer 1

If you choose to use JSP. As it turns out, Java servlet containers—including embedded Tomcat and Jetty containers—usually look for JSPs somewhere under /WEB-INF. But if you’re building your application as an executable JAR file, there’s no way to satisfy that requirement. Therefore, JSP is only an option if you’re building your application as a WAR file and deploying it in a traditional servlet container. If you’re building an executable JAR file, you must choose Thymeleaf, FreeMarker, or one of the other options