I think the fan in the article is right, Exeter used to be great at getting the best out of players who were deemed surplus to requirements elsewhere. They also benefitted from having the core of their squad flying under England's radar for a number of seasons as well.
Love or loathe Exeter, they have been successful in their relatively short time in the Premiership and have become a victim of sorts of that success. A number of those players leaving are members of that core squad that have become international regulars. With wage demands and the salary cap, it's not feasible to keep them all.
Any opportunity I can take to have a stab at Saracens I will, as the article is underplaying Saracen's strength. If being able to put out a largely international backline, plus a couple of internationals in the pack, against Sale last weekend and it still could be considered an under-strength side, that would suggest Saracen's do not have stars "dotted" through their squad.