A game of two halves…?

There’s a few things worth returning to in Drew Nelson’s Irish Times interview. This statistic is one of them:

“In the first 20 years of the Troubles four Orange halls were burnt, one of which was in Cavan. But since 1989 there were 240 burnt. It is significant that at around the same time the republican movement started to oppose our parades. There was occasional bother before that but not to this extent.”

So is it a meaningless coincidence? Does it relate to reactionary factors, like changes in the type of Loyalist violence? British countermeasures? Or is it simply part of a ‘war by other means’ designed to undermine confidence in the Unionist community?