Left ventricle ejection stents and stents n pacemaker

@godnme
Your post does not give much information for me to post my experience with the topics you mentioned.

You posted left ventricle fraction which is EF. What is your EF? Normally is 50-70. When it reaches 30 based on my EP a ICD is recommended. A pacemaker is a totally different device even though like mine is both. A pacemaker is implanted to help with electricl issues of the heart.

Is your concern with metal in your body? You mentioned metal plate in cervical spine?

If your heart is not functioning well, either with faulty rhythm or with weakness due to pathology, then a pacemaker may improve its function. As the previous poster has offered, we know very little about your case. But if an expert you find credible and well-credentialed says you'd almost certainly improve with a pacemaker, I would spend some time thinking about it before rejecting it out of either fear or misapprehension.
It sounds like your left ventricle, the lower, larger chamber below the left smaller atrium, is either not filling with blood properly or you have a weak/leaky mitral valve between those two left chambers and the ventricle is pumping blood back through the mitral valve. The last possibility is remote because they're not fixing the mitral valve...............are they? That would come first before a pacemaker...I would think. So what is left is that your left ventricle is not working properly, not contracting well....not sure. A pacemaker's direct signal will help it to get good signal strength and it will contract more forcefully.
Again, this is only a guess from a non-expert who knows very little about the particulars of your case.