I've been a user of your project and it's fantastic. I think you're being too hard on yourself.
The proliferation of marketplaces and assets to trade (and all type of projects, automated trading, market making, etc... that your project enabled) can been seen as a net positive, as a win win for all parties involved and more.
From a microeconomic perspective, your library enabled access to startup using js and with relatively simple tech stacks access to a tool that would otherwise be relatively complicated and time consuming and for which they would not necessary have the resouces. By doing so you lowered the cost of entry and allowed new entrants to challenge the status quo.
And from a macroeconomic perspective I think it's one of the reason access to capital has been simplified and has lowered in cost, it's one of the reason for the low cost of mortgages and the relative resilience of economies during covid (central banks interventions are useless without bank and other financial intermediaries participation, it would be like pushing on a string).
Don't be fooled by the contemporary contempt against finance. It's still the most important reason that explain the constant improvmements in prosperity and peace of recent years, and the best thing one can do is to make it less arcane and open it to more people. One of the achievements of your tool.
You can be proud of your work.