I would like to know what Austen Ivereigh's apparent innuendo on Twitter is all about. Can anyone, please, help?

The following exchange is verbatim from Twitter,

A. Ivereigh, a "Catholic Voice", tweeted today "if only those little old ladies duped into believing SPUC is Catholic knew what their money is being spent on ...."

When I tweeted back, asking for an explanation,   "@austeni @blondpidge @PeterDCXW What does SPUC spend their money on?"
 Blondpidge replied,  "very good question. As they are a lobby group & not a charity we'll never know."

I replied, "If we'll never know, why the innuendo about how old ladies' money spent? Seeking clarification as someone who workes (my typo. Should be worked) with SPUC."


Blondpidge: "Well how does pursuing campaign against archbishops & catholic voices further pro-life cause? Please tell me?"

I replied, "If ++s in question were soft on abortion, or immoral sex-ed, campaign would help."

I would like to know what Austen Ivereigh's apparent innuendo is all about. Can anyone, please, help?