"hamstring" is a little harsh. Let's just say it's reduces their options minimally.
Often .060 differential can be humongous and is more than enough for anyone or any ball; it can be 8"+ of flare. Besides, we've seen with ball like the Big Blue, its RG diff is small but yet it still has a large enough mass bias differential together with the coverstock to hook more than you need, in general, almost more than you want.
Additionally, there have been somenew designs in coverstocks in recent years, both particle AND resin, that make these HUGE differentials superfluous.
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"When we choose an action,
we also choose the consequences of that action.