I know it may be a lot of users’ first time using something that is decentralized like this. As I’ve been a Fediverse user for some time, I had been waiting for a big migration like this to happen as it usually happens with Twitter every now and again. Welcome to Fedi, hope you enjoy your stay!
The tight-knittedness (new word, yay) of many Fediverse applications is part of the reason that is a thing, and the decentralization a.k.a. private ownership by individuals rather than companies of instances means moderation is more meaningful and less robotic. The only bots you should ever see on the Fediverse are purpose-made ones. Examples are the gutenberg bot and various anime photo bots on the other Fediverse sites that are bots made just to post things, no farming incentive.