Is your goal to have a martech stack that doesn't rely on third party silos, or is your goal to have your lead-gen form populate your Airtable CRM for your new experimental acquisition campaign?
The marketer is being asked to acquire users, not make it look pretty behind the scenes. In the testing phase, it's way better to use Zapier to get things done fast. Then you can revisit and scale later with a proper solution if it turns out to be a productive campaign.
But there in is the problem. Most Marketers I've had the pleasure of working with/for will never come back and implement the proper (scalable, secured, etc) solution. By the time this first ad-hoc creation has either failed horribly or taken off, they're off on the next new "idea".. there's no time to property revisit that last one, why would we? It's either dead and forgotten or working as I gloriously intended!
I've actually already seen Zapier go 'full lifecycle' in two separate environments. It went from "cautiously approved" to "banned by both name and by functionality" both times due to the marketing team zapping their collected data off to, lets call them.. overly public output storage locations.
The marketer is being asked to acquire users, not make it look pretty behind the scenes. In the testing phase, it's way better to use Zapier to get things done fast. Then you can revisit and scale later with a proper solution if it turns out to be a productive campaign.