Growth-driven design is a way of organizing work. It has no ranking mechanism of its own, and running it doesn't make pages rank. What it gives search work is a regular slot in which to do the things search depends on, and a habit of checking results afterward.
The launch is the first place this matters. In the method, a site begins with a first version called a launchpad. If that launch changes, merges or removes URLs, Google's guidance on site moves with URL changes applies. It recommends mapping each old URL to its corresponding new one and using permanent server-side redirects that point straight at the final destination. It also recommends updating internal links, canonical tags and sitemaps, and generally keeping the redirects in place for at least a year.
The same guidance covers pages that are being dropped. A page folded into a broader one can redirect to it. A page with no replacement can return a 404 or 410. Redirecting many unrelated pages to one destination risks having them treated as soft 404s. Google also says rankings can fluctuate while it recrawls a moved site, so careful redirects reduce the risk without removing it. Before you cut a page for getting no search clicks, check whether it earns links or supports sales conversations, because clicks are only one of the things a page can be doing.
After launch, a cycle can take on a search task: rewriting a page that ranks for a term and doesn't answer the question behind it, or fixing a slow template. Google's page experience documentation says Core Web Vitals are used by its ranking systems and that good scores don't guarantee top rankings. So a speed fix is worth doing for visitors, and any effect on rankings is something to observe afterward.
Reading a search result takes care, because rankings move for reasons that have nothing to do with your edit. Keep a dated log of what was changed. The log won't tell you why a ranking moved. It tells you which changes came before the movement and which came after, which is where an investigation starts.