That's not my recollection, at least. I was more of an Atom fan than a Code fan in the middle of the last decade, mostly due to aesthetics, as shallow as that probably sounds -- but it felt like Code surpassed Atom in terms of community activity head-spinningly fast, like in its second year.

I also think the sibling comment is right; TextMate never had the huge collection of plugins later editors did, but you can very much see the seeds of Sublime Text's package system in it, and Sublime is a very obvious influence on Atom/Code. (Although they were smart to have package management fully integrated; Sublime's package management system is a bit clunky by comparison.)