Instance matters as every instance has different “all” and “local” feed. It helps with organic discovery of communities.

Also check out plethora of different apps for your smartphones, if that’s your jam.

For networking mastodon side of fediverse would be better for it. There you can follow, and talk with individuals. Not the hive mind of a community.

Technically you can talk from lemmy to mastodon, but it’s better to make a mastodon account.

If you want to give up your feelings and pursuit then yes, if not then no.