The top of the list has got to be that one of their testimonials presented to investors is from "DrDeflowerMe". It's also interesting to me because they list financials which position them as unbelievably tiny: 6,215 subscribing accounts, 400 average new accounts per month, which to me sounds like they have a lot of churn.
I'm in my third year of subscribing and I'm actively looking for a replacement. This "Start Engine" investment makes me even more confident that's the right decision. Over the years I've paid nearly $200/year for this and watched them fail to deliver basic functionality. They just don't have the team to deliver AI tooling. For example: 2 years ago I spoke with support about the screen that shows you your credit card numbers being nearly unreadable (very light grey numbers on a white background), which still isn't fixed. Around a year ago a bunch of my auto transfers disappeared, causing me hundreds of dollars in late fees. I contacted support and they eventually "recovered" all the missing auto-transfers, but it ended up with some of them doubled up, and support stopped responding when I asked them to fix that.
I question if they'll be able to implement the changes they want, let alone be able to support those features if they do.