>reputable western vaccines

Many vaccines were developed, the less effective ones aren't really a matter of "reputation" but something more like luck. Many things were tried, some worked better than others. There was no guarantee that never-before-approved mRNA-type vaccines were going to work, be safe enough to use, and work better than other vaccines, but it did turn out that way. That was not a result of a priori superiority or reputation, but an experimental technique happening to work out well.