The way the ECHR is applied may at times irritate and as in all human affairs no court will always be perfect in its reasoning and decisions. But the ECHR has done immense good throughout Europe. Precisely because it is a " living instrument", it has been able to promote human rights. We take for granted today that illegitimate children should not suffer discrimination and that homosexual relationships should not be criminalised. But delivering these reforms is just some of the good work of the ECHR. As Churchill saw, it's drafting and promotion has been one of the great achievements of UK soft power for the common good of all.
At the end of his video, Jenrick gratuitously offers an irrelevant image which is intended, I infer, to show an immigrant gloating over money he is getting. The only purpose of this is to stir up hatred against immigrants. That is why we need the ECHR. It is also why he is showing himself entirely unfit for office.