Oh Timmy! Too bad he goes off on a radical tangent. Heís got a good product with strong safety merits and advantageous attributes in the many situations that would tax oneís strength with other rescue devices, including the paddlefloat/hand pump self rescue (which really requires some significant practice for use in rough seas). Iíve recommended sponsons in the past but it is only one of many rescue devices with its own inherent demerits as well.
Consummate seamanship is still oneís primary way to keep from having to use these devices in extremis, but at some point equipment and back-up devices, as most good boaters know, may be required for situations like unexpected heavy weather sailing, including the use of tow wraps. Sea anchors and drogues can work too for the mariner caught off guard but, these devices have disadvantages too (stress loads to vessel, twisting tethers, etc).
Being the best mariner you can be is the only thing that stands the test of time. Making that an individual reality amongst the many types of vessels and gear and techniques and regional differences and approaches to personal safety isnít something I can determine for someone else, only myself. One can share their recommendations and experiences. And mental stability helps.