I'm kind of disappointed that this is about social media presence and not the physical world. I am a big proponent of working with your garage door up, quite literally, and I make it a point to do projects in my garage or my driveway, visible to my neighbors. I also make it a point to interact with my neighbors if they're doing a project and offer a hand or company (if they're interested in either). This is part of how I've built community around me in the places I live. Doing things like helping someone replace a valve cover gasket and spark plugs at 11PM so they could get to work in the morning when they were already too deep in fixing their only car; baking bread and running my smoker in the driveway and then offering BBQ sandwiches to my neighbors; setting up my jobsite table saw and miter saw in the driveway when doing home improvement projects, only to find out a neighbor is a tiler and can help me finish out my shower after I do the framing; etc.
I have found a lot of value in being open to other people, when I'm actively engaged in something. It's not even about displaying competence or showing off (which is how I look at people doing the same on social media), it's about doing your own thing in a way which is inviting rather than offputting, so if somebody wants to ask questions, give a helping hand, or just feel comfortable doing their own thing in a way that's inviting, you help create that sense of community and ambience around you. This is a stark contrast to many places around, at least the US, where something as simple as working on your car in your driveway might be punished. Community is built, and we're all part of it, and working in the open is one of the best ways to help build community.
To that point, though, there /used/ to be a place to do this online in an honest way, which was niche forums. I wrote and posted many of the how-to guides for one of the popular cheap enthusiast car platforms I used to own on the niche webforum for that platform, in part because there wasn't much material out there so I knew I'd actively be helping others to document and photograph my work for sharing online. But now those forums are mostly gone, replaced by Facebook groups, and across the net the signal to noise ratio is completely skewed. Trying to work in the open online is screaming into the void, and if someone does notice it is actively offputting because it comes off as insincere and self-aggrandizing. It is absolutely not the same as literally working with your garage door open.