Old code and programmers with old ideas hold back "real life" Java projects quite a bit from what they technically could be in a more modern form.
Complexity and bloat definitely come with that, I think some folk get used to building EnterpriseTurboWidgetFactoryImpl type horrors and never consider the language doesn't need to do that kind of thing any more... Java being so backward compatible I think also means it doesn't do enough to discourage that either though, which is also a reason why Kotlin is so nice -- the lowest effort solution is miles more understandable.
Complexity and bloat definitely come with that, I think some folk get used to building EnterpriseTurboWidgetFactoryImpl type horrors and never consider the language doesn't need to do that kind of thing any more... Java being so backward compatible I think also means it doesn't do enough to discourage that either though, which is also a reason why Kotlin is so nice -- the lowest effort solution is miles more understandable.