Arduino opened up an ecosystem when they started back in 2005, but the world looks a lot different in 2023. First-party Arduinos are nothing special these days, and their competitors make way better products for far less money. Even the Arduino IDE has been leapfrogged by MicroPython / CircuitPython.
Hobbyists these days just aren't all that interested in Arduino anymore, and there is pretty much nothing paid which they can introduce which will change that.
Not with $54M in debt to service. This is a death warrant. I'm sure the execs will make out nicely, though.
The problem is that they give up ownership (and probably ownership) to people who may have different goals and values. This can lead to enshittification, especially for a company that doesn't have a good path to extreme growth and profits. You also can't discharge ownership in bankruptcy like you can with debt.
But it operates somewhat worse than a loan because the buyer now has some say in how the company is run, and they will want to see a return on their investment eventually.
A loan may be better because as long as the company can service it, the lenders have no say in how the business is run, and they get no additional profit from increased income/profit of the business.
You need either at least an order of magnitude more (still iffy, people don't buy boards all the time), or to sell into some larger market. Are there 100M electronics hobbyists to sell to over the world? Maybe if you make it into schools...