Webflow is a Web Design tool (for Designers)… not a Developers tool.
However; some Developers (such as myself) have adapted by adding Designer tools into their mix.
In using Webflow… Developers are crossing over into the Design arena… by adding this tool to their palette / mix.
Photoshop is an Artistic Design tool… a lot of Web Designers have taken and used Photoshop to design websites / UI’s.
Prior to Webflow… I hand-coded everything. That includes screens (UI) which is the most difficult part to create (for Developers… much easier for Designers).
IMO… that’s where paying ( $800 - $900 a year ) for Webflow creates an advantage (for Developers).
For me… I mostly use Webflow as a proto-typing tool. Ultimately… the websites that I design are exported and converted into PHP… which then adds substantially more expandability - such as the incorporation of databases and Angular (which can added without PHP)… to name a couple.
Understandably… the info-graphic isn’t “completely accurate” when defining the roles and tools of the Developer.
But it’s a start.
And Yes… it is interesting that Webflow was in the info-graphic. It does show the product is growing in acceptance.