Not needed as far as pressure, but I’ve had bands and hose clamps alike seep over time and the band is a one use thing and if you cut them in the field you better have a spare. You could just use a hose and hose clamps and no AN line at all for that matter. However for me, I do like the look of AN, the ease of removal, and ive never had a compression fitting seep or leak, including on higher pressure lines on my LS. Just a preference. Loads of ways to skin a rabbit. But your advice is solid and some folks will undoubtedly see AN lines as total overkill and just want to use PS line with hose clamps or bands.