at the time, we were trying to figure out how to add more products in without it becoming messy, and we concluded we're trying to do a lot more than just what would work well for a 1 product company (we have very extensive content for example) - we feel quite multidimensional. thus a flatter design was proving hard to do. we wanted something that could enable us to offer a very wide variety of things (like 10+ products, handbook, job board, newsletter etc)
a lot of existing websites are trying to convey what they do in <3 seconds, and all of the internet is going for that. our company doesn't fit into 3 seconds, or if it does it's annoyingly vague "a whole bunch of devtools"...! so we thought hey we'll do something that means people _will_ explore and learn what we do better. it will mean _some_ people bounce and that's ok, because those that stick will (sometimes!) love it.
as a project, it looked fun and we knew it'd stand out a lot as a way to justify it. it's much nicer and more cost effective for us to ship something 10/10 cool than go down the outbound-y sales route. we run at a 3 month cac payback period if you're into startup stats. the proviso is that only works if you go _really_ deep, so that your work actually stands out.