Yes, it's true..my 2000 Westerly Blues 90 has got a big chunky C shaped neck contour.
It is quite meaty and I find it perfect for me as I have medium-big hands with long fingers and so don't fancy slim necks very much.
This neck is similar to vintage 1959 Les Pauls ( not that I ever had the luck of playing one, but I have an early '90s reissue( C shaped neck but a little bit slimmer ,and I played some pricey Custom Shop reissues some months ago ,and they have that kind of big neck) ,it feels full and big in your hand and the fretboard is wide and strings are well spaced.
My other electric Guilds ( both from the mid '60s ) have very comfortable necks but a bit slimmer, but I still find them very easy to play. So is my acoustic D25: has got quite a chunky neck as well. My late Eighties D50 is the one with the slimmer neck that I find more difficult to play. I had to get used to it and it took me months, and some modifications( a wider spaced nut ,a taller bone saddle) and still it's not very comfortable to play for my hands dimension,though the sound is superb.