Residential developer buys former church in Oak Square

Or, put differently, this currently vacant unused large property in a desirable part of the city can be repurposed to house hundreds of people in dozens of families. City regulation will ensure a significant amount of these homes will be set apart for affordable housing.

But, of course your snarky sentiment is correct. Masshole NIMBY asshats would rather have the decaying church standing as a testament to the horror inflicted on children which caused the church to close it in the first place.

One could question if your sense of style is just that important.

If there's only one true church, then repurposing it as one of the others is profanation.

Over the other side of Jamaica Plain, St. Andrews is now the Bethel AME.

It does seem like an odd thing to prohibit.

I know of at least two near me: Reservoir Church on Rindge Avenue in North Cambridge (formerly Our Lady of Pity, a French-language parish) and Missionary Church of the Haitian Community on Winter Hill in Somerville (formerly St. Polycarp's parish)

Over the years, Archdiocese of Boston has been more relaxed about end use of buildings by other religions than some other conservative dioceses would. Some places would restrict to closely-aligned denominations. Boston has gone further over the years - Saint Andrew and Saint Polycarp (as a couple of the others mentioned), also Saint Leo's (now Pentecostal) and Saint William's (SDA) come to mind.
Other buildings have been converted to or replaced with shelters or housing (or bulldozed by urban renewal).
...and they got embarrassed on end-use a couple of times (didn't somebody flip a conversion in E Boston?).
...
On the flip side, there's a couple of Catholic church buildings in Boston that were conversions from other religions, so it actually does work both ways.

I don't remember what use restrictions the Archdiocese put on use of the Blessed Sacrament church building. It's certainly possible that there were some.
I do remember that there were contending ideas for use of the property. Somebody in the Archdiocese administration was in favor of working with the individual parcels (church, rectory, school, convent - whatever different things were part of it) to separate redevelopment (housing, community services...). I forget if any form of that included keeping the church building open as a Catholic church. Unfortunately, one of the other voices in the official mix (supposedly with real estate background) pushed for making it one big parcel, which contributes to the continued unused state. Said person was reputed to have had clumsy results in a couple of other redevelopment/reuse cases and I think has been eased out of the picture since then.