I work in paediatrics. There's a lot of misinformation here. TheDisillusionedAnarchist's posts are spot on.
BCG offers poor protection for respiratory TB late in life.
A failure to give BCG does not mean you're more at risk of TB later in life. Failing to give a child BCG is not remotely comparable to real anti-vaxxers failing to give MMR etc.
BCG offers the best protection, about 70%, against disseminated forms such as miliary TB and meningitis.
These variants are only likely to be caught by an infant living in close proximity for a significant period of time with someone with active TB.
BCG protection is commonly thought to decline over 10 to 20 years, so as previously mentioned those cases of adults getting it would not have been prevented by infant BCG vaccine.
The efficacy of BCG vaccine in pulmonary disease has ranged from no protection to 80% in controlled trials.
The aim of providing vaccines to infants in certain populations or geographical areas is to protect them if they have a relative who may travel or be affected.
When I worked in a particular area of the UK the policy at that time was to offer it to any baby whose parent was from a country deemed high risk: Asia, Africa, the Caribbean, Eastern Europe. As it happened that encompassed most babies in that area, but there were plenty who didn't need it and weren't eligible (had to put on a yellow card). It may have changed since then.
Where I work now, BCG is not routinely recommended to infants of migrant parents is not routinely offered because of the uncertainty of the risks and benefits. It is not recommended at all to babies of non-migrant, non-travelling parents.
I used to administer BCG. It takes practice. I messed up quite a few I remember.
There's a world wide shortage of BCG vaccine.
2.5% of people get injection site abscesses.
1% get lymphadenitis.
In summary the BCG is a difficult vaccine, it doesn't fit the rules of the standard vaccine debate, and I think calling the OP names based on her asking questions when there's little understanding expressed by posters here is a bit unfair.