Fear of unknown because they do not understand what the rule changes entail.
The old immigration rules part 9
excluded family and private life routes but the new Suitability Rules include them. However under the new rules people who overstayed in the past but later granted visa in the knowledge of those previous breaches are specifically
excluded:
SUI 11.4. An applicant will be treated as having breached immigration laws if, aged 18 or over, they:
(a) overstayed their permission, unless an exception in SUI 11.5. or SUI 11.6. applied to that period of overstaying; or
(b) breached a condition attached to their permission, unless entry clearance or further permission has subsequently been granted in the knowledge of the breach; or
(a) were (or still are) an illegal entrant; or
(b) used deception in relation to a previous application (whether or not successfully).
Advice is given based on my personal research and experience only. Do NOT contact me via private message for immigration advice