The open source nature of Bitcoin, makes sure that development can always be forked. We saw this as recently as with the creation of Bitcoin Cash, which forked

The open source nature of Bitcoin, makes sure that development can always be forked. We saw this as recently as with the creation of Bitcoin Cash, which forked form Bitcoin to implement bigger blocksizes, and which is not developed by Blockstream. In the end, if you don't read the code, you'll have to trust someone else did, and would raise a fuss about any shady findings.