Fair point, I think it depends how you frame it - and it is a fine line between being earnest and sleazy. As a founder you've gotta get comfortable walking it.

Here's some feedback after I unearthed your homepage:

You say users of the tool aren't on HN (which is a technology audience), yet your landing page is talking about technology and not the problem your solving. My guess is the audience for EXCEL are Business Analysts, admin staff, accountants, executives, etc. And not people in technical roles who'll get excited by the technology.

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You start off with some questions, but only one of them means anything to me:

"HAS YOUR BUSINESS AN EXCEL PROBLEM?" What is an excel problem? (Also, "DOES YOUR BUSINESS HAVE AN EXCEL PROBLEM?" reads better to me)

"DO YOU HAVE HUNDREDS OF UNMANAGED SHEETS RUNNING REPORTS?" This is the only question I can really answer.

"DO THEY TELL YOU IT WOULD TAKE TOO MUCH TIME TO REPLACE WITH PROPER APPS?" Who are "they"?

then you have:

"LIKE EXCEL, JIG IS A LIGHTWEIGHT SOLUTION TO CREATE DYNAMIC BUSINESS REPORTS AND APPS IN MINUTES. " This is fine

"UNLIKE EXCEL, JIG FILES ARE AUDITABLE, MAKING JIG APPS INHERENTLY SAFE. " What does safe and auditable in this context mean? What benefit does that give me? Surely the main benefit is the ergonomics and speed of accessing my data and safety and auditability are just side effects?

So, as someone who doesn't use Excel a whole lot, but I've seen businesses which run on very complicated excel spreadsheets without too much hassle, I'm struggling to see the problem.

As above, you talk about electron, and JavaScript, and auditability - which is fine for a technical audience, but if I'm a spreadsheet user I couldn't care less if it's built on Electron, or Flutter, or Qt, I just want to know how it helps me.

Would an excel user really care about a REPL (or even know what it is?) Or Version control, or the fact that something is or isn't on the cloud?

Surely the people who care about developer tooling would just be doing the visualisation in R or Python?

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I'm not saying there isn't a problem here, but perhaps you're not framing it the right way for the right audience?

Rather than asking vague questions, why not be pro-active and just give an answer.

Something like (and this is spitballing at 11:00pm on a Friday night so you know what the quality will be):

"Data is the lifeblood of businesses, yet you trust it to a glorified calculator. JIG re-imagines the spreadsheet, exposing data in new ways, ensuring you don't miss a thing."

Or: "30% of sales opportunities are lost because of incorrectly understood data, Jig exposes the trends for you so you'll never miss a deal."

Or: "Spreadsheets are complicated, they're messy and they're hard. Jig makes complicated spreadsheets quick and easy, giving you more time to focus on your business."

Or: "Excel buries data, JIG exposes it."

Or: "Excel was created in 1987, it was built for an simpler, less data-rich, era. JIG re-imagines the spreadsheet, with a focus on 2021 levels of data."

You get the picture.

Frame the problem, sell the solution, and instead of talking about the technology say how the technology helps.

Also, perhaps without customer testimonials find some case studies of times when excel has failed and what that failure cost. One that comes to mind, which is almost certainly too sensitive, is the contact tracing system in the UK that was built on excel. It failed when they ran out of rows causing hundreds of thousands of people to not be contacted about covid exposures. There will be tons of examples that aren't as life threatening that you can use to illustrate the benefits of Jig.