Enjoyed it but found it to be very very heavy.
A Gold Star with RRT2, clip-ons, and a GP carburetor is the
worst possible configuration for use on the street so, of course, just about any modern bike will be better by comparison. Using a bike configured that way as a standard for comparison is silly and uninformed at best, and deceptive at worst.
Although I have an SCT gearbox on my Special Competition, I have rearset foot pegs so I have an RRT2-type kickstarter quadrant that leans the starter forward, out of the way of my leg. Because of that forward lean, that bike is quite uncomfortable to start. In contrast, my Catalina and BB Gold Stars have "normal" kick starters and are comfortable to start. If I didn't have rearsets on m Special Competition, it too would be the same.
That video showed someone struggling to get his Gold Star past TDC. Either that incident was staged, or the rider is incompetent. It's trivial on any of my Gold Stars to push the engine through until it hits compression, pull in the compression release, and ease it past TDC. It's faster to do it than it was to type the previous sentence, and a lot faster than the time spent by the guy struggling to do it in the video. But, of course, an electric starter eliminates even having to do that.
As for traveling 100 miles, with the clip-ons shown in that video, I completely agree. However, my Gold Stars have normal handlebars so are quite comfortable for even longer distances than that. The longest distance I've ridden a Gold Star in recent years was 300 miles in a day, and I was no more tired at the end of that day than I would have been on one of my modern bikes. Vibration is a total non-issue, and I don't have to struggle trying to balance a 470-lb. motorcycle when pulling into a fueling station. I say this also owning modern bikes, so I'm not viewing this through rose tinted glasses.
Again, an old Gold Star (or old Vincent, for that matter) isn't for everyone, but that video review of the new Mahindra simply lacks objectivity or credibility.
Note to Eric: you've probably forgotten you posted your question on Britbike, not here. As soon as I hit "post reply" on this I'll copy/paste it as a message here.