Autism was never my forefront concern - even when my oldest was diagnosed with it.
The unknown is my concern. I've always been well aware of the many medications and bits of advise that doctors over all the centuries have given - that have turned out flat out wrong leading to extreme problems such as deformities in unborn children and extreme complications and side effects.
Complications due to vaccinations - in a variety of forms - do happen. So much so that there's a national vaccine injury compensation trust fund which compensates in the event of such 'side effects'
The focus on Autism is out of proportion: for all the documented and compensated conditions that are related to vaccinations - few are autism. Statistics Reports However. Take into account the stringent list of qualifying conditions and their narrow time-frame. I imagine it's hard to determine, scientifically - and it's likely that autism is only one such potential latent condition.
All in all: the percentile of cases-to-injections is low. A lot of children and adults are vaccinated - a small percentage overall have complications . . . but the payouts in compensations is quite high (in the millions each year)
They aren't "safe" - but it's a matter of weighing our risk: risk of contracting THAT disease - VS the lower risk of developing reactions to the vaccine.
I know some parents weigh out the risk and avoid certain vaccinations due to the high-risk rate associated with it and they consider that the risk of contracting said disease is low.