The case for it is specific rather than general. Video demonstrating a process, showing a result, or answering a question people ask before buying does work that text cannot, particularly in trades and services where somebody wants to see the standard of work. Those videos also rank in ordinary search results, which means the effort serves two purposes.
The case against is production cost, which is higher than people estimate. A usable video requires filming, editing, a thumbnail, a title, and a description, and the editing is the part that consumes the afternoon. A business producing one video a month sustainably will outperform one that produces six in a burst and stops, and knowing which of those you are is worth being honest about before starting.
Consider where the video actually needs to live before assuming it needs a channel. Video on your own website, showing your work or explaining your process, delivers most of the commercial benefit and can be hosted anywhere. The platform matters when you want discovery from people who have not heard of you, which is a different objective from reassuring somebody already looking at your site.
If you do commit, treat it as search rather than as broadcast. Titles matching what people actually type, thumbnails legible at small size, and descriptions containing real information will outperform production quality by a wide margin. Businesses spending on equipment before understanding that consistently produce beautiful videos nobody finds.
Whatever you publish, embed it on your own site as well rather than leaving it only on the platform. A video on a service page answers a question at the moment somebody is deciding, which is worth more than a view from somebody browsing. It also means the effort produces something on an asset you own rather than only on one you rent, and if you ever stop publishing, the videos on your site continue working while an abandoned channel does not. Set a realistic first target of twelve videos over a year rather than a weekly schedule, because twelve is achievable alongside actual work and a weekly commitment is what produces the abandoned channel.