Bedrock in Java makes java edition act and feel like bedrock, while also keeping the java duping, server connections, and realms.
One thing Bedrock in Java adds is 1.8 pvp if you like bedrock pvp beter than java pvp then i've got you covered and if you like hoplite and 1.9 + pvp then you can turn some mods off
Also if you want to connect to servers like Galaxite, lifeboat and enchanted dragons you can get the ip and join on viabedrock to know how checkout vifabricplus on modrinth